For the solution of this question we will use a technique called the Unitary Method. In this method we find the value of a single unit, which is 1, and then finding the necessary value by multiplying the single unit value.
In our case we are already given the value of the single unit which is 1 inch. And it is also given in the question that 1 inch = 50 miles. Thus, to find the value in miles 2.6 inches, all that we have to do multiply the single unit value, which is 50 miles, with the value given which is 2.6 inches.
Thus, we have:
If 1 inch represents 50 miles,
then 2.6 inches represents [tex] 2.6\times 50 [/tex] miles=130 miles
Thus, 130 miles is the correct answer.
Carmela randomly selected 65 stamps from a stamp collection. Eleven of these were commemorative stamps. What is the interval estimate for the proportion of commemorative stamps in the entire collection if the sampling method had a margin of error of ±0.025?
The expression 12g12g12, g gives the number of kilometers a car can travel using ggg liters of gasoline. How far can this car travel on 5 \dfrac125 2 1 5, start fraction, 1, divided by, 2, end fraction liters of gasoline?
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The manager of a sawmill wants to find out what percentage of the boards that the mill produced are defective.
Which sampling methods are likely to be biased?
Select each correct answer.
The manager selects 20 boards at random each day for 5 days and examines them.
Every 40th board produced over the course of 1 week is selected and examined.
On 1 day, an hour after the sawmill begins production, 30 boards in a row are selected and examined.
The manager sends an email to 20 customers who buy lumber from the mill, asking each how many of the boards they bought the past week were defective. Results from the first 5 customers to respond are tallied
The third and fourth methods described are more likely to yield unbiased results, whereas the first and second methods are prone to bias.
The manager of a sawmill wants to find out what percentage of the boards that the mill produced are defective. To determine this accurately, the manager must use unbiased sampling methods.
Biased Sampling Methods
On 1 day, an hour after the sawmill begins production, 30 boards in a row are selected and examined: This method is likely to be biased because it only considers boards produced during a specific timeframe, which might not represent the entire production cycle.
The manager sends an email to 20 customers who buy lumber from the mill, asking each how many of the boards they bought the past week were defective. Results from the first 5 customers to respond are tallied: This method is biased due to its reliance on customer self-reporting and the fact that only the first few respondents are considered, which might not be representative.
Possibly Unbiased Sampling Methods
The manager selects 20 boards at random each day for 5 days and examines them: This sampling method is likely to be unbiased as it involves random selection across multiple days, covering a broader production span.
Every 40th board produced over the course of 1 week is selected and examined: This method is less likely to be biased as it systematically covers the production over a week, though it might miss defects that occur in clusters shorter than 40 boards.
In summary, the third and fourth methods described are more likely to yield unbiased results, whereas the first and second methods are prone to bias.
Each box of Fred’s Fudge is constructed from 2 triangles and 3 rectangles. What is the shape of each box?
The answer is a rectangular prism
The boxes of Fred's Fudge, made of 2 triangles and 3 rectangles, are most likely shaped as triangular prisms.
Each box of Fred's Fudge is constructed from 2 triangles and 3 rectangles. The shape of each box can be determined by visualizing how the triangles and rectangles are assembled. In most cases, packaging that includes triangles would imply the presence of triangular prism shapes, where the triangles serve as the ends and the rectangles connect the corresponding sides of the triangles. Hence, it's reasonable to conclude that the shape of each box is likely a triangular prism.
help please and thank you.
Identify the question that is NOT statistical.
A)What is the maximum number of swimmers allowed on a swim team?
B)What were the times of the top five swimmers in the competition?
C)How many people attended on each of a three day competition?
D)How many tickets were purchased by each school for the competition?
Answer:
A)What is the maximum number of swimmers allowed on a swim team?
Step-by-step explanation:
usatestprep
Write an algebraic expression that illustrates the multiplicative identity.
Answer:
The multiplicative identity shows us that any time you multiply something by the number 1, the result would be what you started with.
Ex: 1(m) or 1 x m.
The reason for thusbis that when you are multiplying you are representing groups of something, so 1 group of anything or m, would just be that anything or m in this case!Step-by-step explanation:
An item selling for $1102 is reduced to $806. To the nearest whole, what is the percent decrease?
A flagpole that is 30 feet tall casts a shadow that extends 42 feet from the base of the flagpole. What is the distance from the top of the flagpole to the end of the shadow?
A small pizza has a diameter of 10 inches and cost 7.75 how many square inches of pizza are in a small pizza? what is the cost per square inch?
Please need help on this any clue any one
Answer:
A
Step-by-step explanation:
it makes the most sense
James surveyed people at school and asked whether they bring their lunch to school or buy their lunch at school more often. The results are shown below.
Bring lunch: 46 males, 254 females
Buy lunch: 176 males, 264 females
The events "male” and "buys lunch” are not independent because
P(buys lunch | male) = P(male) = 0.4.
P(male | buys lunch) = P(male) = 0.3.
P(buys lunch | male) = 0.3 and P(male) = 0.4.
P(male | buys lunch) = 0.4 and P(male) = 0.3.
The events "male” and "buys lunch” are not independent because
P(buys lunch | male) = 0.3 and P(male) = 0.4.
Option C is the correct answer.
What is probability?It is the chance of an event to occur from a total number of outcomes.
The formula for probability is given as:
Probability = Number of required events / Total number of outcomes.
Example:
The probability of getting a head in tossing a coin.
P(H) = 1/2
We have,
We are given that,
P(buys lunch | male) = 0.3 (the probability that a male student buys lunch)
P(male) = 0.4 (the probability that a student is a male).
These values suggest that there is a dependence between the two events.
The probability of buying lunch at school may be different for males and females.
The conditional probability P (buys lunch | male) is not equal to the marginal probability P(buys lunch) if the events "male" and "buys lunch" are dependent.
To confirm this,
We would need to calculate the conditional probability
P(buys lunch | female) (the probability that a female student buys lunch).
If this probability is different from 0.3 (the probability for males), then the events "male" and "buys lunch" are dependent.
Therefore,
The events "male” and "buys lunch” are not independent because
P(buys lunch | male) = 0.3 and P(male) = 0.4.
Learn more about probability here:
https://brainly.com/question/14099682
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Which of the following points is a solution of y > |x| + 5?
(0,5)
(1, 7)
(7, 1)
The sum of two numbers is 76. The first number is 4 more than twice the other. How much is the first number?
how do you find the slope intercept form if you are given two triangles with one point over laped?
Solve for x. 6x^2−2=13
0.000309 in scientific notation
You have a 64 foot of fencing. What are the dimensions of the rectangle of the greatest area you could enclose?
What is x- and y- intercept of -7x + 2y= 14
I need help on 4, 5 :)
A picture measuring 2.5" high by 6" wide is to be enlarged so that the width is now 18 inches. How tall will the picture be?
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Letitia has 7 1/6 yards of yellow ribbon, 5 1/4 yards of orange ribbon, and 5 1/6 yards of brown ribbion. How much ribbion does she have altogether
Mrs. Plesich has a 16 1/2 ounce bag of chocolate chips. She will only use 1/4 of the bag for decorating a cake . How many ounces will she use for the decorating.
Last year Anthony earned $24,000. After a brief lay-off this year, Anthony's income is $18,500.
What I am basically trying to find is the Percent Of Change and I have to state whether or not the change is an increase or a decrease.
Final answer:
Calculate the percentage change in income, find a decrease of 22.92% from last year to this year.
Explanation:
Given:
Original income = $24,000
Current income = $18,500
Step 1: Calculate the change in income:
Change in income = New income - Original income = $18,500 - $24,000 = -$5,500
Step 2: Calculate the percentage change in income:
Percentage change = [(Change in income) / (Original income)] x 100
= [(-$5,500) / ($24,000)] x 100
= -22.92%
Step 3: Interpretation:
The percentage change is -22.92%, indicating a decrease in income by 22.92%.
Find the interest earned and the balance of the account: P=$650 R=4% T=2 Years
Find the measure of side b.
Find the distance represented by 2.6 in. if the scale 1 in. = 50 mi. is used.
Answer:
10inch
Step-by-step explanation:
The weight of a person on or above the surface of the earth varies inversely as the square of the distance the person is from the center of the earth. A particular person weighs 192 pounds on the surface of the earth and the radius of the earth is 3900 miles. Determine the equation that relates weight, W, to the distance from the center of the earth, d, for this person.
Answer choices on picture.
Please help for number 2!