A national survey of middle school students asks how many hours of sleep they get on school nights. Which sample ​best​ represents

Question

A national survey of middle school students asks how many hours of sleep they get on school nights. Which sample ​best​ represents the population?

a.) A group of 941 students in eighth grade in a certain town
b.) A group of 886 students in sixth grade in a certain county
c.) A group of 795 students in seventh grade in different states
d.) A group of 739 students in different middle school grade levels from various states

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Tài Đức 3 weeks 2023-01-13T12:37:02+00:00 1 Answer 0 views 0

Answer ( 1 )

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    2023-01-13T12:38:02+00:00
    Answer:
    D
    Step-by-step explanation:
    It wouldnt be a single grade being surveyed so we would choose d in additon a and b isnt national since it says ‘in a certain town’ and ‘in a certain county’.
    Which leaves you with D.

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