Health hazards of housework. Is housework hazardous your health? A study in the Public Health Reports (July-Aug. 1992) compares the life expectancies of 25-year-old white women in the labor force to those who are housewives. How large a sample would have to be taken from each group in order to be 95% confident that the estimate of difference in mean life expectancies for the two groups is within 1 year of the true difference? Assume that equal sample sizes will be selected from the two groups, and that the standard deviation for both groups is approximately 15 years.
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.