Mathematics, 21.05.2020 22:13 zahrast14

You are planning a study to determine if mean height in a population has

changed. The populations mean height in 1920 was 64 inches with a standard

deviation of 4 inches. The study needs a big enough sample to detect a change

of 1% with a power 0.8 and a significance of 0.05. How big should the sample

be?

A 307

B 70

C 69.09

D 306.25

Answers: 1

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You are planning a study to determine if mean height in a population has

changed. The po...

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