3
QuizMultiple Choice

Statistical Inferences

Question 3 • AZ-Common Core Algebra II B

Jason and Yolanda both drew a simple random sample from a non-normally distributed population of 25,000. Jason’s sample consisted of 0.24% of the population, while Yolanda’s sample consisted of 0.32% of the population. Whose sample can be used to make inferences about the population?

Answer
A
neither Jason’s sample nor Yolanda’s sample
B
only Jason’s sample
C
only Yolanda’s sample
D
both Jason’s sample and Yolanda’s sample

Explanation

Jason’s sample size is 0.24% of 25,000, or 60 people; Yolanda’s is 0.32% of 25,000, or 80 people. Both samples are simple random samples and are large enough (at least 30) for inferences about a non-normally distributed population. Therefore, both Jason’s and Yolanda’s samples can be used.

AI-written and checked against the verified answer.

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