A recent GSS reported that the 486 surveyed females had a mean of 8.3 close friends (s
Question:
a. Estimate the difference between the population means for males and females.
b. The 95% confidence interval for the difference between the population means is 0.6 { 2.1.
Interpret.
c. For each gender, does it seem like the distribution of number of close friends is normal? Why? How does this affect the validity of the confidence interval in part b?
Distribution
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Related Book For
Statistics The Art And Science Of Learning From Data
ISBN: 9780321755940
3rd Edition
Authors: Alan Agresti, Christine A. Franklin
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