An object is taken from a freezer at negative 8 degrees Upper C. Let t be the time in hours after the object was taken from the freezer. At time t the average temperature of the object is increasing at the rate of Upper T prime (t )equals 20 e Superscript negative 0.4 t degrees Celsius per hour. Find the temperature of the object at time t.

Answer:

it is the  midpoint  formula because that is the only equation of  that is being divided by 2. The formula is X1 +X2 divied by 2 then it is Y1 + Y2 dived by two which gives you half of something like a line

Step-by-step explanation:

Answer:

mid point

Step-by-step explanation:

Answer:

1/3

Step-by-step explanation:

Answer:

1/3

Step-by-step explanation:

took a test and its correct.

Answer:

A. Brand A has a higher average price than brand B.

D. Brand A's prices are less spread out than brand B's prices.

Step-by-step explanation:

We are given the means and standard deviations for samples of prices from two  different brands of shoes below;

 Brand A                                                                  Brand B

Mean : $50                                                           Mean : $40

Standard deviation : $5                                  Standard deviation : $8    

Now, from the given statements;

Statement A is correct that Brand A has a higher average price than brand B because as given above Mean of Brand A ($50) > Mean of Brand B ($40).

Also, Statement D is correct that Brand A's prices are less spread out than brand B's prices because the Variance of Brand A is less than the variance of Brand B, i.e.;

    Variance of Brand A = [tex]5^{2}[/tex] = $25

    Variance of Brand B = [tex]8^{2}[/tex] = $64

Clearly, $25 < $64, so statement D is also correct.

Therefore, the two true statements are Statement A and Statement D.

Final answer:

A. Brand A has a higher average price than brand B.

D. Brand A's prices are less spread out than brand B's prices.

Explanation:

The true statements are that Brand A has a higher average price and less variability in prices than Brand B, which is represented by a lower standard deviation for Brand A.

To expand on these points:

Brand A has a mean price of $50 which is higher than Brand B's mean price of $40, confirming that Brand A has a higher average price (Statement A).

Brand A's standard deviation is $5, while Brand B's standard deviation is $8. A standard deviation is a measure of spread or variability in a set of data. The fact that Brand A's standard deviation is lower indicates that its prices are less variable and more closely clustered around the mean, hence less spread out compared to Brand B (Statement D).

Answer:

Step-by-step explanation:

Zip codes with 5 digits (all five digits can be repeated): 10^5=100,000 if first digit is 0, its no longer 5-digit right? Zip codes with no digit being repeated: 10*9*8*7*6=30,240 if first digit is 0, its no longer 5-digit right? Zip codes with at least one digit being repeated: 90000-27216 = 62784 ?N

Answer:

the answer is 1,3,4,5

Step-by-step explanation:

Answer:

2,4,5

Step-by-step explanation:

Answer:2,4,and5

Step-by-step explanation:Common sense

Answer:

1  1/10 gallons

Step-by-step explanation:

Add 4/5 gallon + 3/10 gallon

Get a common denominator of 10

4/5*2/2  + 3/10

8/10 +3/10

11/10

Change from an improper fraction to a mixed number

10/10 + 1/10

1 1/10 gallons

Answer:

1.1

Step-by-step explanation:

If she added the first 4/5 then she added the 3/10 then you have to add them to figure out how much water is in the bucket.

There are 54 two-digit numbers greater than 45. This is calculated by finding the range of valid two-digit numbers (46 to 99) or carefully counting possible combinations without including 45.

The two-digit numbers greater than 45 are any numbers from 46 to 99. We can find the amount of these numbers by subtracting 45 from 99. So, there are 54 two-digit numbers greater than 45.

Another way to visualize this is by considering the two-digit possibilities. The first digit can range from 4 to 9 (six possibilities), and the second digit can range from 0 to 9 (ten possibilities). However, since 40-45 are not included, we subtract 5 from the total possibilities, resulting in 60 (=6*10) -5 = 55. Therefore, it seems that we have one number too many, but we must not forget that 45 itself is not included, hence the total numbers exceeding 45 are 54 (55-1).

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Answer:

i believe it is 4 but i'm not so sure

Step-by-step explanation:

:)

The graph of g(x)=(x-2)^2+3 compared to the graph of f(x)=x^2 is translated 2 units to the right and 3 units upwards.

To understand the transformation of graphs in mathematical terms, consider the initial function f(x) = x^2. The transition to the new function g(x)=(x-2)^2+3 is a result of a shift or translation of the graph. This transformation behaves as per the following rule: g(x) = f(x-h)+k where 'h' units is the horizontal displacement and 'k' units is the vertical displacement.

In the function g(x), x shifts two units to the right (as indicated by (x-2)) and three units upward (as indicated by +3).

So, the correct answer is 2 units right and 3 units up.

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Answer:

Length of the chord: 24 units

Angles are equal

Step-by-step explanation:

Drop a Perpendicular from the centre onto the chord. It will divide the chord into two equal parts, d units each

d² + 16² = r²

d² = 20² - 16²

d² = 144

d = 12

Chord = 2d = 24 units

Measure of central angle and the corresponding chord related to the measure of the arc intercepted by the chord are the same, they're equal

Answer:

The entire chord length is 12*2 = 24

The degree measure of a minor arc is equal to the measure of the central angle that intercepts it.

Step-by-step explanation:

We can make a right triangle to solve for 1/2 of the chord length.  The hypotenuse is 20 and one of the legs is 16

a^2+b^2 = c^2

16^2 + b^2 = 20^2

256 +b^2 = 400

Subtract 256 from each side

b^2 = 400-256

b^2 =144

Take the square root of each side

b = 12

That means 1/2 of the chord length is 12

The entire chord length is 12*2 = 24

The equation in slope-intercept from is [tex]y = \frac{9}{8}x - \frac{3}{8}[/tex].

Step-by-step explanation:

Given that,

x = 8t+3

y = 9t+ 3

Now, getting the value of t on both side to compare the equations.

[tex]x = 8t+3[/tex]

[tex]x -3 = 8t[/tex]

[tex]t = \frac{x-3}{8}[/tex]

also

[tex]y = 9t+ 3[/tex]

[tex]t= \frac{y-3}{9}[/tex]

Now, by comparing the values of t, we get

[tex]\frac{x-3}{8} = \frac{y-3}{9}[/tex]

[tex]9x - 27 = 8y -24[/tex]

[tex]9x - 3 = 8y[/tex]

[tex]y = \frac{9}{8}x - \frac{3}{8}[/tex]

Hence, the equation in slope-intercept from is [tex]y = \frac{9}{8}x - \frac{3}{8}[/tex].

Answer:

She would have to sell 44 cookies or more.

Step-by-step explanation:

Answer:

She would have to sell 44 cookies or more

Step

Answer:

The 95% confidence (and interpret) the proportion of all American adults of European an- cestry who dislike the taste of cilantro

(  0.2552  , 0.2709)

b) The lower bound for the proportion of all American adults of European ancestry who dislike the taste of cilantro is  0.2552

Step-by-step explanation:

Explanation:-

Given data a survey of 12087 American adults of European ancestry asked whether they like or dislike the taste of cilantro.

large sample size 'n' = 12087 American adults

in survey A total of 3181 said that they dislike the taste of cilantro.

so The sample proportion 'p' = [tex]\frac{3181}{12087} = 0.2631[/tex]

a) Estimate with 95% confidence (and interpret) the proportion of all American adults of European ancestry who dislike the taste of cilantro.

[tex](p - 1.96 \sqrt{\frac{pq}{n} } ,p + 1.96\sqrt{\frac{pq}{n} } )[/tex]

[tex](0.2631 - 1.96 \sqrt{\frac{0.2631 X 0.7369}{12087} } ,0.2631 + 1.96\sqrt{\frac{0.2631 X 0.7369 }{12087} } )[/tex]

(0.2631 - 0.00784 , 0.2631 + 0.00784 )

(  0.2552  , 0.2709)

b) The lower bound for the proportion of all American adults of European ancestry who dislike the taste of cilantro is  0.2552

We are 95% confident that the proportion of all American adults of European ancestry who dislike the taste of cilantro is between 25.5% and 27.1%, and at least 25.5% dislike the taste.

This question is related to confidence intervals in statistics. To compute a confidence interval for a population proportion, we mainly need the sample proportion and the size of the sample. Here, the proportion is the number of respondents that dislike cilantro (3181) divided by the total number of respondents (12087).

Thus, the sample proportion (value of p) is 3181/12087 = 0.263 or 26.3%.

The formula for a confidence interval is:

CI = p +/- Z * sqrt[ (p(1-p)) / n ],

where Z is the Z-score (for 95% confidence, Z = 1.96), p is the sample proportion, and n is the sample size.

Applying the values, we get:

CI = 0.263 +/- 1.96 * sqrt[ (0.263)(1 - 0.263) / 12087 ]

After calculation, the 95% confidence interval is about (0.255, 0.271). This means we are 95% confident that the proportion of all American adults of European ancestry who dislike the taste of cilantro is between 25.5% and 27.1%.

For the lower bound, we can take the lower limit of our confidence interval, which is 0.255 or 25.5%. This means we are 95% confident that at least 25.5% of all American adults of European ancestry dislike the taste of cilantro.

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Answer:

1,0

Step-by-step explanation:

Answer:

1,0

Step-by-step explanation:

[tex]\[ s = kt^5 \][/tex]

This equation represents the model for the statement "s is directly proportional to the fifth power of t".

When two variables [tex]\( s \)[/tex] and [tex]\( t \)[/tex] are directly proportional to each other, it means that as one variable increases, the other variable also increases by a constant factor. Mathematically, we can express this relationship as:

[tex]\[ s = kt^n \][/tex]

Where:

- [tex]\( s \)[/tex] is the dependent variable.

-[tex]\( t \)[/tex] is the independent variable.

- [tex]\( k \)[/tex] is the constant of proportionality.

- [tex]\( n \)[/tex] is the exponent representing the power to which the independent variable is raised.

In this case, the statement says that  s is directly proportional to the fifth power of t . So, we have:

[tex]\[ s = kt^5 \][/tex]

This equation represents the model for the statement "s is directly proportional to the fifth power of t".

Complete correct question:

Write a model for the statement

s is directly proportional to the fifth power of t.

Answer:

200 pencils and 120 pens

Step-by-step explanation:

Let the number of pencils be x while pens be y.

Considering the cost of whole purchase then, we get the equation

0.5x+y=220

Considering the number of items bought, then the equation is

x-y=80

Adding the two equations then we have

1.5x=300

x=300/1.5=200

Consideeing that x-y=80 and x is 200 then

200-y=80

y=200-80=120

Therefore, the pencils were 200 and pens 120 pieces

Answer:

A, E

Step-by-step explanation:

brainliest please

Answer:

The proportion of chips that do not fail in the first 1000 hours of their use is 52%.

Step-by-step explanation:

The claim made by the company is that 52% of the chips do not fail in the first 1000 hours of their use.

A quality control manager wants to test the claim.

A one-proportion z-test can be used to determine whether the proportion of chips do not fail in the first 1000 hours of their use is 52% or not.

The hypothesis can be defined as:

H₀: The proportion of chips do not fail in the first 1000 hours of their use is 52%, i.e. p = 0.52.

Hₐ: The proportion of chips do not fail in the first 1000 hours of their use is different from 52%, i.e. p ≠ 0.52.

The information provided is:

[tex]\hat p=0.49\\n=900\\\alpha =0.02[/tex]

The test statistic value is:

[tex]z=\frac{\hat p-p}{\sqrt{\frac{p(1-p)}{n}}}=\frac{0.49-0.52}{\sqrt{\frac{0.52(1-0.52)}{900}}}=-1.80[/tex]

The test statistic value is -1.80.

Decision rule:

If the p-value of the test is less than the significance level then the null hypothesis will be rejected and vice-versa.

Compute the p-value as follows:

[tex]p-value=2\times P(Z<-1.80)\\=2\times 0.03593\\=0.07186[/tex]

*Use a z-table.

The p-value = 0.07186 > α = 0.02.

The null hypothesis was failed to be rejected at 2% level of significance.

Conclusion:

The proportion of chips that do not fail in the first 1000 hours of their use is 52%.

Step-by-step explanation:

[tex]1)\:v = 2 {e}^{3t} + 5 {e}^{ - 3t} \\ differentiating \: w.r.t.t \: on \: both \: sides \\ acceleration =\\ \frac{dv}{dt} = \frac{1}{dt} (2 {e}^{3t} + 5 {e}^{ - 3t} ) \\ = 2 \times \frac{1}{dt} {e}^{3t} + 5 \times \frac{1}{dt} {e}^{ - 3t} \\ \\ = 2 \times {e}^{3t} \times 3 + 5 \times {e}^{ - 3t} \times ( - 3) \\ = 6{e}^{3t} - 15{e}^{ - 3t} \\ \therefore \frac{dv}{dt} = 6{e}^{3t} - 15{e}^{ - 3t} \\ \therefore \bigg(\frac{dv}{dt} \bigg) _{t=1} = 6 {e}^{3 \times 1} - 15 {e}^ { - 3 \times 1} \\ \bigg(\frac{dv}{dt} \bigg) _{t=1} = 6 {e}^{3} - 15 {e}^ { - 3 } \\ acceleration = \\ \purple{ \boxed{ \bold{\bigg(\frac{dv}{dt} \bigg) _{t=1} = \bigg(\frac{6 {e}^{6} - 15}{ {e}^{3} } \bigg) \: m {s}^{ - 2} }}} \\ \\ 2) \: let \:s \: be \: the \: total \: distance \: travelled \\ \therefore \: s = v \times t \\ \therefore \: s= (2 {e}^{3t} + 5 {e}^{ - 3t}) \times t \\ \therefore \: (s)_{t=2} = (2 {e}^{3 \times 2} + 5 {e}^{ - 3 \times 2}) \times 2 \\ \therefore \: (s)_{t=2} = (2 {e}^{6} + 5 {e}^{ - 6}) \times 2 \\ \therefore \: (s)_{t=2} = 4 {e}^{6} + 10{e}^{ - 6} \\ \red{ \boxed{ \bold{\therefore \: (s)_{t=2} = \bigg(\frac{4 {e}^{12} + 10}{{e}^{ 6}} \: \bigg)m}}}\\ [/tex]

Answer:

It is A,B,and E.

I just did the question and it was right

The true statements about the dot plots are (A) Both have the same number of data points, (B) Both means are between 3 and 4. and (C) Westwood has less variability than Middleton.

Mean of a set of data is defined as the average of all the values. It gives the exact middle point of the data set.

Given are two plots, Middleton and Westwood.

Data points in plot 1 are 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 9

Total number of data points in plot 1 or Middleton = 20

Data points in plot 2 are 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6

Total number of data points in plot 2 or Westwood = 20

So, both have the same number of data points.

Mean of Middleton = Sum of the data points / Total number of data points

                                = [1 + (4×2) + (5×3) + (4×4) + (4×5) + 6 + 9] / 20

                                = 75/20

                                = 3.75

Similarly,

Mean of Westwood = 77/20 = 3.85

So both means are between 3 and 4.

Median is the exact middle element when arranged in increasing or decreasing order.

Exact middle point is the average of 10th and 11th element.

Median of Middleton = (3 + 4)/2 = 3.5

Median of Westwood = (4 + 4)/2 = 4

Both have different medians.

Range of the data set is the difference of maximum point and minimum point.

Range of Middleton = 9 - 1 = 8

Range of Westwood = 6 - 2 = 4

Both have different ranges.

Range is a measure of variation.

Range of Westwood is less than range of Middleton.

So, Westwood has less variability than Middleton.

Hence the true statements are A, B and C.

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QUESTION BEGINNING

Given a snail is traveling along a straight path. The snail’s velocity can be modeled by [tex]v(t)=1.4ln(1+t^2)[/tex] inches per minute for 0 ≤ t ≤ 15 minutes.

Answer:

B=22.35 Inches per minutes

Step-by-step explanation:

If the snail's velocity is [tex]v(t)=1.4ln(1+t^2)[/tex] per minute, its displacement for             0 ≤ t ≤ 15 minutes is given by the integral:

[tex]\int v(t) dt=\int (1.4ln(1+t^2))dt=76.04307[/tex]

The constant acceleration of the ant is 2 Inches per minute.

The velocity of the ant therefore, twill be:

[tex]\int 2 dt=2t+K, $where K is a constant of integration$[/tex]

For the interval, 12≤t≤15, the displacement of the ant is:

[tex]\int_{12}^{15}(2t+K) dt=81+3K[/tex]

Since the snails displacement and that of the ant are equal in 12≤t≤15.

81+3K=76.04307

3K=76.04307-81

3K=-4.95693

K=-1.65231

At t=12, the velocity of the ant  is therefore:

2t+K=2(12)-1.65231=22.348 Inches per minutes

B=22.348 Inches per minutes

Final answer:

The question examines a scenario involving an ant accelerating to catch up with a snail, focusing on determining the ant's velocity at the catch-up point. Utilizing the principle of kinematics and acceleration, the answer lies in relating the acceleration to the final velocity, dependent on the time variable, which underscores the direct relationship between acceleration and velocity increase.

Explanation:

The question essentially deals with kinematics, specifically with the scenario of an ant accelerating from rest to catch up with a snail. Given the ant accelerates at 2 inches per minute per minute, and eventually matches velocities with the snail, the goal is to find the ant's velocity (B inches per minute) at the moment it catches up.

Firstly, we know the acceleration (a) is 2 inches/minute2. From kinematic equations, specifically v = u + at, where 'u' is the initial velocity (0 in this case since the ant starts from rest), 'a' is acceleration, and 't' is time, we can plug in our values. The time variable 't' here represents the duration from when the ant starts until it catches up with the snail, which is not explicitly given but is critical in understanding the rate of acceleration's contribution to velocity.

For the purpose of solving this problem, without explicit time or distances, we focus on the principle that the ant's final velocity (B) is a product of its acceleration over a given period: B = 0 + (2)t. Thus, the value of 'B' entirely depends on the time 't', demonstrating a direct correlation between acceleration duration and velocity increase.

Answer:

Experiement lacked blindness concept

Step-by-step explanation:

In good experiments, the results are totally unbiased and unknown to anyone, even to those conducting the experiment.

In the given case, the interviewer had an idea about which group had gone for meditation so it was obvious that they would yield less anxiety.

Here the concept of blinding was missing, which is essential for a good and fair experiment. A good experiemnt is a double blinded experiement or atleast it should be single blinded

A sample size of 188 would be needed to achieve a 6% margin of error at a 90% confidence level.

Used the formula for sample size calculation:

[tex]n = \dfrac{z^2 \times p (1 - p)}{E^2}[/tex]

Where: n = sample size.

Z = Z-score corresponding to the desired confidence level.

p = estimated proportion of the population that supports the candidate.

E = desired margin of error.

Here we have to give that,

90% confidence level corresponds to a Z-score of approximately 1.645.

That is, z = 1.645

p = 0.5

E = 0.06

Substituting the given values into the formula, we get:

[tex]n = \dfrac{z^2 \times p (1 - p)}{E^2}[/tex]

[tex]n = \dfrac{(1.645)^2 \times 0.5(1 - 0.5)}{0.06^2}[/tex]

[tex]n = \dfrac{0.6765}{0.0036}[/tex]

[tex]n =187.9[/tex]

Rounded to whole numbers,

[tex]n = 188[/tex]

Therefore, the size of the sample would be 188.

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In order to achieve a 6% margin of error and a 90% confidence level in a poll, the correct sample size must be determined using the error bound formula. A larger and representative sample will minimize the margin of error and improve the poll's precision and accuracy. A number of key factors, like identification of the target population and select a random sample, should be considered while conducting a poll.

The subject matter dealt with here involves conducting a poll to gauge public opinion, with a desired accuracy defined by a 6% margin of error and a 90% confidence level. This is primarily related to Statistics, a branch of Mathematics.

To determine an appropriate sample size for a given margin of error and confidence level, the error bound formula is utilized. Although the actual formula could appear complex for some, many online calculators can complete the task. The 90% confidence level means that if we were to take multiple sets of samples, roughly 90% of the calculated confidence intervals would contain the true population mean or proportion.

Furthermore, sample size influences the margin of error; a larger sample reduces the margin of error and makes the poll result more precise and accurate. As a rule of thumb, the sample should be random and representative of the population in question to ensure the accuracy and reliability of poll results.

Take note that many criteria must be met to conduct a valid and scientifically accurate poll, some of which include: identifying the desired population of respondents, ensuring the sample is both random and representative of the wider population, and interviewing a sufficient number of citizens to achieve a reasonable sample size.

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Answer:

The standard error of the sample proportion is closest to 1%

Step-by-step explanation:

Standard error of the sample proportion is given as

σₓ = √[p(1-p)/n]

where

p = sample proportion = estimated to be 23% = 0.23

n = Sample size = 2500

σₓ = √[p(1-p)/n]

σₓ = √[0.23×0.77/2500]

σₓ = 0.0084166502 = 0.00842

σₓ = 0.00842 = 0.842%

Hence, it is easy to see that the standard error of the sample proportion is closest to 1%.

Hope this Helps!!!

Answer:

The critical value of t at 0.01 level of significance is 2.66.

Step-by-step explanation:

The hypothesis for the two-tailed population mean can be defined as:

H₀: μ = μ₀ vs. H₀: μ ≠ μ₀

It is provided that the population standard deviation is not known.

Since there is no information about the population standard deviation, we will use a t-test for single mean.

The test statistic is defined as follows:

[tex]t_{cal.}=\frac{\bar x-\mu}{s/\sqrt{n}}\sim t_{\alpha/2, (n-1)}[/tex]

The information given is:

n = 55

α = 0.01

Compute the critical value of t as follows:

[tex]t_{\alpha/2, (n-1)}= t_{0.01/2, (55-1)}=t_{0.005, 54}=2.66[/tex]

*Use a t-table for the value.

If the desired degrees of freedom are not provided consider he next highest degree of freedom.

Thus, the critical value of t at 0.01 level of significance is 2.66.

Answer:

Step-by-step explanation:

REcall the following definition of induced operation.

Let * be a binary operation over a set S and H a subset of S. If for every a,b elements in H it happens that a*b is also in H, then the binary operation that is obtained by restricting * to H is called the induced operation.

So, according to this definition, we must show that given two matrices of the specific subset, the product is also in the subset.

For this problem, recall this property of the determinant. Given A,B matrices in Mn(R) then det(AB) = det(A)*det(B).

Case SL2(R):

Let A,B matrices in SL2(R). Then, det(A) and det(B) is different from zero. So

[tex]\text{det(AB)} = \text{det}(A)\text{det}(B)\neq 0[/tex].

So AB is also in SL2(R).

Case GL2(R):

Let A,B matrices in GL2(R). Then, det(A)= det(B)=1 is different from zero. So

[tex]\text{det(AB)} = \text{det}(A)\text{det}(B)=1\cdot 1 = 1[/tex].

So AB is also in GL2(R).

With these, we have proved that the matrix multiplication over SL2(R) and GL2(R) is an induced operation from the matrix multiplication over M2(R).

Answer:

see explanation

Step-by-step explanation:

(a)

For the graph to display direct proportion it must pass through the origin.

The graph shown does not pass through the origin thus does not represent direct proportion.

(b)

Given that q is directly proportional to r then the equation relating them is

q = kr ← k is the constant of proportion

To find k use the condition q = 76 when r = 20, thus

76 = 20k ( divide both sides by 20 )

3.8 = k

q = 3.8r ← equation of proportion

When r = 45, then

q = 3.8 × 45 = 171

Answer:

a, -b

Step-by-step explanation:

When x is a, the function becomes

[tex]f(a)=3(a-a)(a+b)[/tex]

as you see, a-a is 0, and as your whole function is multiplied by this, it makes it 0.

[tex]f(-b)=3(-b-a)(-b+b)[/tex]

As you see -b+b is 0, and once again, this would make the whole function 0.

Answer:

[tex]n=(\frac{1.75(8.2)}{1.5})^2 =91.52 \approx 92[/tex]

So the answer for this case would be n=92 rounded up to the nearest integer

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

[tex]\bar X[/tex] represent the sample mean for the sample  

[tex]\mu[/tex] population mean (variable of interest)

s represent the sample standard deviation

n represent the sample size  

Solution to the problem

The margin of error is given by this formula:

[tex] ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}[/tex]    (a)

And on this case we have that ME =1.5 and we are interested in order to find the value of n, if we solve n from equation (b) we got:

[tex]n=(\frac{z_{\alpha/2} \sigma}{ME})^2[/tex]   (b)

The critical value for 92% of confidence interval now can be founded using the normal distribution. And in excel we can use this formla to find it:"=-NORM.INV(0.04;0;1)", and we got [tex]z_{\alpha/2}=1.75[/tex], replacing into formula (b) we got:

[tex]n=(\frac{1.75(8.2)}{1.5})^2 =91.52 \approx 92[/tex]

So the answer for this case would be n=92 rounded up to the nearest integer

Answer:

3

Step-by-step explanation:

0 indicates no relationship. must be full number.