8.85 How often do women feel sad? A recent GSS asked, How many days in the past

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8.85 How often do women feel sad? A recent GSS asked,

“How many days in the past seven days have you felt sad?” The 816 women who responded had a median of 1, mean of 1.81, and standard deviation of 1.98. The 633 men who responded had a median of 1, mean of 1.42, and standard deviation of 1.83.

a. Find a 95% confidence interval for the population mean for women. Interpret.

b. Do you think that this variable has a normal distribution? Does this cause a problem with the confidence interval method in part a? Explain.

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Statistics The Art And Science Of Learning From Data

ISBN: 9781292164878

4th Global Edition

Authors: Alan Agresti, Christine A. Franklin, Bernhard Klingenberg

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