Multiple Samples

Question 1

A survey was conducted asking people about their favorite fruit. Which inferences about the population are true based on the data? Check all that apply.

Revolt · Accepted Answer

About twice as many people prefer apples as prefer bananas.; Bananas are preferred much less frequently than apples or oranges.; The samples show little variation for each fruit.

Question 2

What is the ratio of the average number of bass to the average number of fish in each sample?

Revolt · Accepted Answer

7/20

Question 3

For women, the most frequently worn item of clothing is .

Revolt · Accepted Answer

pants

Question 4

Which inference is true?

Revolt · Accepted Answer

About the same number of students spend 0-30 minutes on homework as spend 31-60 minutes.

Question 5

Take two samples of fish from a pond and analyze the results. What is the average number of bass found in both samples? What is the ratio of the average number of bass to the average number of fish in each sample?

Revolt · Accepted Answer

7; Selection 1: 7; Selection 2: 7/20

Question 6

The table shows two samples of fish from a pond. If 400 fish are in the pond, which proportion represents the average number of bass you would expect to live in the pond?

Revolt · Accepted Answer

StartFraction 7 over 20 EndFraction = StartFraction x over 400 EndFraction

Question 7

Which are valid inferences? Check all that apply.

Revolt · Accepted Answer

About twice as many trout were in the pond at the time the second sample was taken.; Fewer bass were in the pond at the time the second sample was taken.; About the same number of catfish were found in both samples.

Question 8

Make an inference about which fish increased its predicted average population from Year 1 to Year 2.

Revolt · Accepted Answer

Trout increased its predicted average population.

Question 9

Which pair of Linda’s samples seems to have the lowest variability and, therefore, are representative samples?

Revolt · Accepted Answer

samples 1 and 2

Multiple Samples Answers

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