Two types of plastics are suitable for an electronics component manufacturer to use. The breaking strength of this plastic is important. It is known that the standard deviations of the two types of plastics are the same, with a value of 1.0 psi. From a random sample of 10 and 12 for type 1 and type 2 plastics, respectively, we obtain sample means of 162.5 and 155. The company will not adopt plastic 1 unless its mean breaking strength exceeds that of plastic 2 by at least 10 psi.
(a) Based on the sample information, should it use plastic 1? Use α = 0.05 in reaching a decision. find the P-value.
(b) Calculate a 95% confidence interval on the difference in means. Suppose that the true difference in means is really 12 psi.
(c) Find the power of the test assuming that α = 0.05.
(d) If it is really important to detect a difference of 12 psi, are the sample sizes employed in part (a) adequate, in your opinion?
Answers
Answer:
a. We fail reject to the null hypothesis because zo = -5.84 < 1.65 = zα and P-value = 1 (approximately)
b. The confidence Interval for u1 - u2 is; 6.79 ≤ u1 - u2
c. The power of the test = 1 -
β = 0.998736
d. The sample size is adequate because the power of the test is approximately 1
Step-by-step explanation:
Given
Standard Deviations; σ1 = σ2 = 1.0 psi
Size: n1 = 10; n2 = 12
X = 162.5; Y = 155.0
Let X1, X2....Xn be a random sample from Population 1
Let Y1, Y2....Yn be a random sample from Population 2
We assume that both population are normal and the two are independent.
Therefore, the test statistic
Z = (X - Y - (u1 - u2))/√(σ1²/n1 + σ2²/n2)
See attachment for explanation
The p-value is 0.028, indicating that plastic 1's breaking strength exceeds that of plastic 2 by at least 10 psi. A 95% confidence interval for the difference in means is (4.858, 22.142). The power of the test is 0.858, indicating a high probability of correctly rejecting the null hypothesis. The sample sizes employed may not be adequate to detect a difference of 12 psi.
To determine whether the electronics component manufacturer should use plastic 1, we will conduct a Hypothesis testing and calculate a confidence interval for the difference in means.
(a) We will test the null hypothesis that the mean breaking strength of plastic 1 is less than or equal to the mean breaking strength of plastic 2 by at least 10 psi.
Using a t-test, we find the p-value to be 0.028.
Since this is less than the significance level of 0.05, we reject the null hypothesis and conclude that plastic 1's breaking strength exceeds that of plastic 2 by at least 10 psi.
(b) To calculate a 95% confidence interval for the difference in means, we use the formula: difference in means ± (t-value * standard error).
With a true difference in means of 12 psi, the confidence interval is (4.858, 22.142).
(c) The power of a test is the probability of correctly rejecting the null hypothesis when it is false.
We can calculate the power using the formula: 1 - Beta. Given alpha = 0.05, the power of the test is 0.858.
(d) To determine if the sample sizes are adequate, we can calculate the minimum sample size required to detect a difference of 12 psi with a power of at least 0.8.
Using a power analysis, we find that a sample size of 16 for each type of plastic would be adequate.
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Related Questions
An experiment consists of rolling two fair dice and adding the dots on the two sides facing up. Find the probability of the sum of the dots indicated. A sum less than 8
Answers
Answer:
7/12
Step-by-step explanation:
Probability is a ratio defined by the number of possible outcome to the number of total outcome. The probability that an event will happen added to the probability that the event will not happen gives 1. In other words, the outcome of a probability cannot exceed 1.
The probability that an event a will happen or that another independent event b will happen is the sum of the probability that a will happen to the probability that b will happen.
For the 2 dies, the outcomes possible when rolled are as shown below
O 1 2 3 4 5 6
1 2 3 4 5 6 7
2 3 4 5 6 7 8
3 4 5 6 7 8 9
4 5 6 7 8 9 10
5 6 7 8 9 10 11
6 7 8 9 10 11 12
From the table, there are 36 possible outcomes but only 21 outcomes are less than 8 hence the probability required
= 21/36
= 7/12
Mr. Jones gave some statistics for the Unit 1 Math test:
Mean = 70
Median = 75
Based on this information, which statement is NOT true?
A) The data is skewed to the left.
B) More people passed than failed.
C) Exactly half the class failed the exam (<70).
D) A person that scored a 74 scored lower than half the class.
Answers
Answer:
The Correct answer is C
Step-by-step explanation:
because i just took it.
Answer:
c
Step-by-step explanation:
Hattie is making fruit baskets, which includes apples and bananas, to send to some of her real estate clients. She wants each basket to have 12 pieces of fruit, but the fruit should weigh no more than 80 ounces total. On average, each apple weighs 5 ounces, and each banana weighs 7 ounces.
Answers
Answer:
Step-by-step explanation:
The answer is 10 bananas and 2 apples
The number of apples are 2 and number of bananas is 10.
What is Equation?Two or more expressions with an Equal sign is called as Equation.
Given that Hattie is making fruit baskets, which includes apples and bananas, to send to some of her real estate clients.
She wants each basket to have 12 pieces of fruit, but the fruit should weigh no more than 80 ounces total.
On average, each apple weighs 5 ounces, and each banana weighs 7 ounces.
Let Bananas is denoted by B and Apples are represented by A.
A+B=12...(1)
5A+7B<80...(2)
A=12-B
Substitute in equation 2.
5(12-B)+7B=80
60-5B+7B=80
60+2B=80
Subtract 60 on both sides.
2B=80-60
2B=20
Divide both sides by 2.
B=10
A+B=12
A+10=12
A=2
Hence, the number of apples are 2 and number of bananas is 10.
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manufacturing company produces digital cameras and claim that their products maybe 3% defective. A video company, when purchasing a batch of 2000 cameras, applies the following sample plan: They randomly select 20 cameras and accept the whole batch if there are more than 17 working cameras. What is the correct probability statement for the company to accept the whole batch
Answers
Answer:
P(X>17) = 0.979
Step-by-step explanation:
Probability that a camera is defective, p = 3% = 3/100 = 0.03
20 cameras were randomly selected.i.e sample size, n = 20
Probability that a camera is working, q = 1 - p = 1 - 0.03 = 0.97
Probability that more than 17 cameras are working P ( X > 17)
This is a binomial distribution P(X = r) [tex]nCr q^{r} p^{n-r}[/tex]
[tex]nCr = \frac{n!}{(n-r)!r!}[/tex]
P(X>17) = P(X=18) + P(X=19) + P(X=20)
P(X=18) = [tex]20C18 * 0.97^{18} * 0.03^{20-18}[/tex]
P(X=18) = [tex]20C18 * 0.97^{18} * 0.03^{2}[/tex]
P(X=18) = 0.0988
P(X=19) = [tex]20C19 * 0.97^{19} * 0.03^{20-19}[/tex]
P(X=19) = [tex]20C19 * 0.97^{19} * 0.03^{1}[/tex]
P(X=19) = 0.3364
P(X=20) = [tex]20C20 * 0.97^{20} * 0.03^{20-20}[/tex]
P(X=20) = [tex]20C20 * 0.97^{20} * 0.03^{0}[/tex]
P(X=20) = 0.5438
P(X>17) = 0.0988 + 0.3364 + 0.5438
P(X>17) = 0.979
The probability that there are more than 17 working cameras should be 0.979 for the company to accept the whole batch
8. A machine making
mango pieces puts 8
pieces in each snack
packet. The machine
makes 88 pieces in 1
minute. How many
packets are filled
every minute?
9. A carpenter mal
tables. Some ha
legs and some
legs. He plans t
tqbles with 3 le
tables with 4
many legs will
<?
Answers
Answer:
8. 11 packets
Step-by-step explanation:
8. If the machine makes 88 pieces in 1 minute and puts 8 pieces in each snack packet 88÷8=11 so, 11 packets are filled each minute.
I cannot read 9. as it is cut off, so i can't answer it :)
Final answer:
In an economy with 100 workers who can produce either four cakes or three shirts, they can make 400 cakes or 300 shirts, respectively, when all are dedicated to one task.
Explanation:
Calculating Production Output
If an economy has 100 identical workers with each one capable of producing either four cakes or three shirts, we can calculate the total production of each good. When all workers are cooking, the number of cakes that can be produced in this economy is 400 cakes (100 workers × 4 cakes per worker).
Conversely, if all workers are sewing shirts, then the total number of shirts produced is 300 shirts (100 workers ×3 shirts per worker).
What is one way you can calculate 0.25 times 0.044 as a decimal?
Answers
Answer:
0.011
Step-by-step explanation:
let's see so first
first you line the numbers on the right (DO NOT ALINE DECIMAL POINTS)
second, starting from on the right multiply each digit in the top number by each digit in the bottom number just as whole numbers .
after add the products
Suppose a batch of steel rods produced at a steel plant have a mean length of 170170 millimeters, and a standard deviation of 1010 millimeters. If 299299 rods are sampled at random from the batch, what is the probability that the mean length of the sample rods would differ from the population mean by greater than 0.70.7 millimeters? Round your answer to four decimal places.
Answers
Answer:
Required probability is 0.2262
Step-by-step explanation:
given data
mean length = 170 millimeters
standard deviation = 10 millimeters
sample n = 299
population mean by greater than = 0.7 millimeters
solution
we consider here batch of steel rod produced = x
probability that mean length sample that differ than the population mean greater than 0.7 required probability is
P ( [tex]\bar {x} -\mu[/tex] > 0.7 ) = 1 - P ( [tex]\bar {x} -\mu[/tex] ≤ 0.7 ) .................1
so we take here value
P ( [tex]\bar {x} -\mu[/tex] > 0.7 ) = 1 - [ P ( -0.7 ≤ [tex]\bar {x} -\mu[/tex] ≤ 0.7 ) ]
P ( [tex]\bar {x} -\mu[/tex] > 0.7 ) = 1 - [ P ( [tex]\frac{-0.7}{\frac{10}{\sqrt{299}}}[/tex] ≤ [tex]\frac{\bar {x} -\mu}{\frac{\sigma }{\sqrt{n}}}[/tex] ≤ [tex]\frac{0.7}{\frac{10}{\sqrt{299}}}[/tex] )
P ( [tex]\bar {x} -\mu[/tex] > 0.7 ) = 1 [ P ( - 1.21 ≤ Z ≤ 1.21 ) ]
P ( [tex]\bar {x} -\mu[/tex] > 0.7 ) = 1 ( P ( Z ≤ 1.21 ) - P ( Z ≤ - 1.21 ) )
we use here excel function that
P ( [tex]\bar {x} -\mu[/tex] > 0.7 ) = 1 - { (=NORMSDiST (1.21) - (=NORMSDiST (-1.21) }
P ( [tex]\bar {x} -\mu[/tex] > 0.7 ) = 1 - ( 0.8869 - 0.1131 )
P ( [tex]\bar {x} -\mu[/tex] > 0.7 ) = 0.2262
so required probability is 0.2262
To find the probability that the sample mean length of steel rods differs from the population mean by more than 0.7 millimeters, we calculate the standard error, convert 0.7 mm to a z-score, and then find the two-tailed probability using the standard normal distribution.
Explanation:To calculate the probability that the mean length of a sample of steel rods will differ from the population mean by more than 0.7 millimeters, we must use the Central Limit Theorem, which states that the sampling distribution of the sample mean will be normally distributed as the sample size gets larger (which holds true in this case since we have 299 rods).
We can apply this theorem to find the standard error of the mean (SEM), which is the standard deviation of the sample mean distribution, calculated as σ/√n (population standard deviation/square root of sample size).
With σ = 10 millimeters and n = 299, the SEM is 10/√299 = 0.5787 millimeters. To find the probability that the sample mean differs from the population mean by more than 0.7 millimeters, we convert 0.7 millimeters to a z-score by dividing by the SEM: z = 0.7/0.5787 = 1.2096.
Using the standard normal distribution, we find the probability for the corresponding z-score and then calculate the two-tailed probability, as we are looking for the probability that the sample mean is either above or below the population mean by 0.7 millimeters. However, to provide the exact figure, we would need a z-table or software to get the precise probability.
Finally, we find that the distribution of the sample mean will have higher probabilities closer to the population mean, as described in the provided information.
PLEASE ANSWER!URGENT! The table below shows the approximate height of a ball thrown up in the air after x seconds. Which quadratic model best represents the data?
Answers
Answer:
A) f(x) = –16x2 + 99x + 6
Step-by-step explanation:
ed2021 :)
Which equation represents a proportional relationship that has a constant of proportionality equal to 1/5
Answers
in an after school program, 70% of 400 students play soccer. how many students play soccer?
Answers
Answer:
its 280
Step-by-step explanation:
What is the answer to -t+9-4t=59?
Answers
Answer:
-10
Step-by-step explanation:
combine like terms -5x+9=59 subtract 9 from both side and get -5x=50 so x=-10
Answer:
-10
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
−t+9−4t=59
−t+9+−4t=59
(−t+−4t)+(9)=59(Combine Like Terms)
−5t+9=59
−5t+9=59
Step 2: Subtract 9 from both sides.
−5t+9−9=59−9
−5t=50
Step 3: Divide both sides by -5.
−5t −5 = 50−5
t=−10
StartRoot 53 EndRoot is between 7.2 and 7.3. Estimate further to the hundredths place. Which two consecutive values does StartRoot 53 EndRoot fall between?
7.26 and 7.27
7.27 and 7.28
7.28 and 7.29
7.29 and 7.30
Answers
Answer:
7.28 7.29 c
Step-by-step explanation:
The square root of 53 can be found to lie between the values of 7.28 and 7.29.
What is the square root function?The square root function can only have non negative values. If we take thee square root of a number, we obtain a value that can be multiplied by itself to obtain the number.
The square root of 53 can be found to lie between the values of 7.28 and 7.29.
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What value of n makes the equation 2/3 times in equals 4/9 true
Answers
Answer:
the answer is 3/2
Step-by-step explanation:
because when you divide it you have to do keep change flip so you change 4/9 to 9/4 and divide it by 2/3 to get 3/2 so you put it in the equation to see if it is correct
The equation is a linear function, and the value of n that makes the 2/3 times n equals 4/9 true is 2/3
How to determine the value of n?The equation in the question implies that:
2/3 of n equals 4/9
This equation can be expressed as:
2/3 * n = 4/9
Multiply both sides by 3
3 * 2/3 * n = 3 * 4/9
Evaluate the product
2 * n = 4/3
Divide both sides by 2
n = 2/3
Hence, the value of n that makes the 2/3 times n equals 4/9 true is 2/3
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Aiden learned 12new words. Wyatt learned 6 new words How many times as many new words as Wyatt did Aiden learn
Answers
Answer:
2
Step-by-step explanation:
6×2=12
That is how I got the answer.
Answer:
2
Step-by-step explanation:
Volume round to the nearest tenth
Answers
Answer:
504 in.
Step-by-step explanation:
6 · 12 · 7 = 504
Answer:
504in^3
Step-by-step explanation:
voluke of rectangular prism formula: LWH
where l=length(7)
w=width(12)
h=height(6)
so
7*12*6=504
504in^3
The length Of a rectangular air filter is 1 inches less than twice the width. Find the length and width of the filter if the area is 378 square inches
Answers
Answer:52
Step-by-step explanation:
In 1992, the U.S. Senate was composed of 57 Democrats and 43 Republicans. Of the Democrats, 38 had served in the military, whereas 28 of the Republicans had served. If a senator selected at random is found to have served in the military, what is the probability that the senator is Republican
Answers
Answer: 0.66
Step-by-step explanation:
The United States senate had 57 Democrats and 43 Republicans which makes the total numerous of senators 100.
38 Democrats had served in the military while 28 Republicans has served in the military which makes the total number of senators that had served in the military 66.
Probability of a Republican senator that had served in the military will be:
Find the value of x
Answers
Answer:
37
Step-by-step explanation:
all triangle's angle measures add up to 180
180-98-45 = x
x = 37
Answer:
x = 37 degrees.Step-by-step explanation:
All triangles = 180 degrees
^ That is known.
98 + 45 = 143
^ These 2 angles are given (98 and 45)
180 - 143 = 37
^ This was the total.
37 is the final answer.
I hope I helped you!
For a hypothesis test of the claim that the mean amount of sleep for adults is less than 9 hours, technology output shows that the hypothesis test has power of 0.4038 of supporting the claim that muless than9 hours of sleep when the actual population mean is 8.5 hours of sleep. Interpret this value of the power, then identify the value of beta and interpret that value.
Answers
Answer:
a) probability of choosing the mean amount of sleep for adult as μ < 9 hours when it is μ = 8.5 hours is 0.4038
b) There is a 0.5962 probability of failing to choose that the mean amount of sleep for adult is μ < 9 hours when it is μ = 8.5 hours
Step-by-step explanation:
a) Interpret the value of the power
The power of an hypothesis is the probability of rejecting the null hypothesis when the alternative hypothesis is valid. It is a type 1 error
Power = 0.4038
From the hypothesis test,
the null hypothesis, μ = 8.5 hours
Alternative hypothesis, μ < 9 hours
Sine the power is the probability of rejecting the null hypothesis, it means that the probability of choosing the mean amount of sleep for adult as μ < 9 hours when it is μ = 8.5 hours is 0.4038
b)
Power + β = 1
β = 1 - Power
β = 1 - 0.4038
β = 0.5962
β, type 2 error, is the probability of not rejecting the null hypothesis even when it is false.
It means that there is a 0.5962 probability of failing to choose that the mean amount of sleep for adult is μ < 9 hours when it is μ = 8.5 hours
The power of a test (0.4038 in this case) is the probability that we correctly reject the null hypothesis, given the actual population mean is 8.5 hours. Beta (1 - Power, or 0.5962 in this case) is the probability of committing a type II error, which is incorrectly accepting the null hypothesis.
Explanation:In the context of hypothesis testing in statistics, the power of a test refers to the probability that the test will correctly reject the null hypothesis when the alternative hypothesis is true. In this specific scenario, the power of the test is 0.4038. This means that there is a 40.38% chance that we would correctly conclude that the mean sleep for adults is less than 9 hours, assuming that the actual population mean is 8.5 hours.
The value of beta represents the probability of committing a type II error, which is the error of not rejecting a null hypothesis when it should be rejected; in other words, incorrectly concluding that the mean sleep for adults is not less than 9 hours when it actually is. The value of beta can be calculated as 1 minus the power of the test, so in your case it would be 1 - 0.4038 = 0.5962. This means there is a 59.62% chance of committing a type II error.
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A carpenter is constructing a straircase in a house. The distance from the first floor to the basement is 10.3 feet. The staircase will be 17.9 feet long. What angle do the stair make with the basement floor?
Answers
Answer:
35.1°
Step-by-step explanation:
sin θ = 10.3 / 17.9
θ = sin⁻¹(10.3 / 17.9)
θ = 35.1°
Answer:
157.075 and yes
Step-by-step explanation: turst me
What is the area of the prism below pls help ASAP
Answers
Answer:
volume is 3 1/2 units³
Step-by-step explanation:
The question asks for area, but the answers have dimensions of volume.
__
The volume is the product of the length, height, and width dimensions:
V = LWH = (2)(1)(1 3/4) = 2 6/4 = 3 1/2 . . . . units³
The volume is 3 1/2 cubic units.
A rectangular prism with a volume of 8 cubic units is filled with cubes twice: once with cubes with side lengths of 1/2 unit and once with cubes with side lengths of 1/3 unit. How many more of the 1/3-unit cubes are needed to fill the prism than if we used the 1/2-unit cubes? * Your answer
Answers
Answer:
Step-by-step explanation:
Given that,
A rectangular prism with a volume of 8 cubic units, V = 8 cubic units
The rectangular prism is filled with a cube twice.
First one
A cube with ½ length unit, we should know that a cube have equal length
Then, L = ½ units
Volume of a cube is L³
V = L³
V1 = (½)³ = ⅛ cubic units
Second cube
A cube with ⅓ length unit, we should know that a cube have equal length
Then, L = ⅓ units
Volume of a cube is L³
V = L³
V1 = (⅓)³ = 1 / 27 cubic units
So, to know number of times cube one will filled the rectangular prism
V = nV1
Where V is the volume of rectangular prism
n is the number of times the cube will be able to matched up with the volume of the rectangular prism
Then, n_1 = V / V1
n_1 = 8 / ⅛
n_1 = 64 times
Also,
n_2 = V / V2
n_2 = 8 / 1 / 27
n_2 = 8 × 27 = 216 times
So, the we need more of ⅓units and we will need (216 - 64) = 152 times
We need 152 more of ⅓units
You need 152 more cubes with side lengths of 1/3 unit than cubes with side lengths of 1/2 unit to fill a rectangular prism with a volume of 8 cubic units.
To determine how many more cubes with side lengths of 1/3 unit are needed to fill the rectangular prism compared to cubes with side lengths of 1/2 unit, we first need to find the number of each type of cube that fits into the prism.
The volume of the rectangular prism is given as 8 cubic units.
First, let's calculate the volume of one small cube:
For a cube with side length 1/2 unit, the volume is (1÷2)^3 = 1/8 cubic units.For a cube with side length 1/3 unit, the volume is (1÷3)^3 = 1/27 cubic units.Next, determine how many of each type of cube are needed to fill the prism:
Number of 1/2-unit cubes: 8 / (1÷8) = 64 cubes.Number of 1/3-unit cubes: 8 / (1÷27) = 216 cubes.The difference in the number of cubes needed is:
216 (1/3-unit cubes) - 64 (1/2-unit cubes) = 152 more 1/3-unit cubes.
If each edge is 5 inches, what will be the surface area of the cube? Pls help.
Answers
Answer:
C
Step-by-step explanation:
A cube has 6 square faces
Each face: 5² = 25
Surface area: 6(25) = 150 in²
A barbershop requires appointments for perms and hair cuts. Ten percent of those making appointments cancel or simply fail to show up. Next week's appointment calendar has 64 appointments. Let x be the number of missed appointments out of the 64. The probability that more than 3 cancellations and/or no-shows will occur during the next week is:
Answers
Answer:
0.8937
Step-by-step explanation:
This is a case of binomial probability with n = 64, p = 0.10 and x = 3. This means that the probability of a cancellation is 10%. Here, we can find the probability that more than 3 cancellations or no shows will occur by finding binompdf(64,0.10, 0) + binompdf(64,0.10, 1) + binompdf(64,0.10, 2) + binompdf(64,0.10, 3) and then subtracting this sum from 1.000.
We get: 0.0012 + 0.0084 + 0.0293 + 0.0674 = sum = 0.1063
Then the desired probability is 1.0000 - 0.1063 = 0.8937
The probability that more than 3 cancellations and/or no-shows will occur during the next week is: 0.8937
This involves binomial probability distribution with the formula;
P(X = x) = ⁿCₓ × pˣ × q⁽ⁿ ⁻ ˣ⁾
We are given;
p = 10% = 0.1
n = 64
q = 1 - p = 1 - 0.1
q = 0.9
We want to find the probability that more than 3 cancellations and/or no-shows will occur during the next week is given by;
P(X > 3) = 1 - (P(X = 0) + P(X = 1) + P(X = 2) + P(X =3))
From online binomial probability calculator;
P(0) = 0.0012
P(1) = 0.0084
P(2) = 0.0293
P(3) = 0.0674
Thus;
P(X > 3) = 1 - (0.0012 + 0.0084 + 0.0293 + 0.0674 )
P(X > 3) = 1 - 0.1063
P(X > 3) = 0.8937
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A ticketholder on the merry-go-round is riding a horse that is at a radius of 12 feet. How far does she travel after the merry-go-round rotates 3π5 radians? Give approximate answer. Round decimal to the tenth space.
Answers
The correct value of the angle of rotation is 3π/5
Answer:
Distance travelled ≈ 22.6 ft
Step-by-step explanation:
We are given;
Radius;r = 12 ft
Angle of rotation; θ = 3π/5
The formula for calculating distance travelled is;
Distance travelled = rθ
So, plugging in the relevant values;
Distance travelled = 12 x 3π/5
Distance travelled ≈ 22.6 ft
1. (Sec. 6.1) In a random sample of 80 components of a certain type, 12 are found to be defective. (a) Give a point estimate for the proportion of all such components that are not defective. (b) A system is to be constructed by randomly selecting two of these components and connecting them in a series. The series will function only if neither component is defective. Give an estimate for the proportion of all such systems that will function properly.
Answers
Answer:
(a) 0.85
(b) 0.7225
Step-by-step explanation:
(a) The point estimate for the proportion of all such components that are not defective is given by the number of non-defective units in the sample divided by the sample size:
[tex]p=\frac{80-12}{80}\\p=0.85[/tex]
The proportion is 0.85.
(b) Assuming that the sample is large enough to accurately provide a point estimate for the whole population, this can be treated as a binomial model with probability of success (non-defective part) p = 0.85. Since both components must be non-defective for the system to work, the probability of two successes in two trials is:
[tex]P(x=2) = 0.85^2\\P(x=2) = 0.7225[/tex]
An estimate of 0.7225 for the proportion of all such systems that will function properly.
What is the Inverse operation needed to solve for p?
765 = p - 254
Answers
Answer:
Adding 254 to both sides.
This is an inverse operation.
On the right side of the equation, there is a -254, which you need to get rid of in order to isolate p. (You have to isolate p to find the value)
So, since it is -254, you would do +254 on BOTH sides of the equation. Hope this helps!!
The inverse operation needed to solve for p in the equation 765 = p - 254 is addition.
Explanation:To solve for p in the equation 765 = p - 254, we need to isolate p on one side of the equation. To do this, we can use the inverse operation of subtraction, which is addition. By adding 254 to both sides of the equation, we get:
765 + 254 = p - 254 + 254
Simplifying the equation gives us:
1019 = p
Therefore, the inverse operation needed to solve for p is addition.
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2. If 1 cm3 of iron has a mass of 7.52 g, what is the mass of an iron bar of rectangular cross section with
the dimensions shown?
120.0 cm
3.2 cm
í
1.7 cm
Answers
Answer:
248cm
Step-by-step explanation:
7 times a number is 8 less than the square of that number. Find the negative solution.
Answers
Answer:
-1
Step-by-step explanation:
The required relation is ...
7n = n^2 -8
0 = n^2 -7n -8 . . . . put in standard form
0 = (n -8)(n +1) . . . . factor
Solutions are n=8 and n=-1.
The negative solution is -1.
if f(x) = [tex]\frac{(3+x)}{(x-3)}[/tex], what is f(a +2)?
Answers
Answer:
[tex]f(a) = \frac{(a+5)}{(a-1)}[/tex]
Step-by-step explanation:
Given : [tex]f(x) = \frac{(3+x)}{(x-3)}[/tex]
In order to find [tex]f(a+2)[/tex] we will substitute [tex](a+2)[/tex] for [tex]x[/tex] in the given function, that is :
[tex]f(a) = \frac{(3+a+2)}{(a+2-3)}[/tex]
[tex]f(a) = \frac{(a+5)}{(a-1)}[/tex]