A GSS reported that the 486 females had a mean of 8.3 close friends (s 15.6) and

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A GSS reported that the 486 females had a mean of 8.3 close friends (s 15.6) and the 354 males had a mean of 8.9 close friends (s = 15.5).

(a) A 95% confidence interval for the difference between the population means for males and for females is (-1.5, 2.7). Interpret.

(b) For each sex, does it seem like the distribu- tion of number of close friends is normal? Explain why this does not invalidate the result in (a), but may affect the usefulness of the interval.

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Statistical Methods For The Social Sciences

ISBN: 9780130272959

4th Edition

Authors: Alan Agresti, Barbara Finlay

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Question Posted: Aug 30, 2024 07:04 AM

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A GSS reported that the 486 females had a mean of 8.3 close friends (s 15.6) and

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Statistical Methods For The Social Sciences

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