The number of sit-ups that all tenth-grade girls can do in 5 minutes is normally distributed. Beth surveyed 20 of her fellow intramural tennis players, all tenth-grade girls, and determined the mean number of sit-ups they could do. Can she make an inference about the population mean for all tenth-grade girls based on the sample?

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Аноним Аноним · Answer 1 · 2020-04-08T19:47:38+02:00

Answer:

B. No, because she did not use a simple random sample.

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MrRoyal MrRoyal · Answer 2 · 2021-12-17T12:46:15+01:00

The true statement is: No, because she did not use a simple random sample.

From the question, we have the following highlights:

The 20 intramural tennis players cannot represent all tenth-grade girls.

This is so because the selection is biased, and as such it cannot be used to make inference about the overall population

Hence, the true statement is (b)