health clinic found that in a sample of 200 women, the mean and the standard deviation of their masses are 85.5kg and 10.5kg, respectively. Also, 115 women were found to be over-weight. a. Find point estimates of the mean mass and proportion of over-weight in women population. b. Construct a 95% confidence interval for population mean mass. c. Construct a 95% confidence for proportion of over-weight in women population. Use a test at the 5% significance level. Fortune enlisted Yankelovich Partners to poll 600 adults on their ideas about marriage, divorce, and the contribution of the corporate wife to her executive husband (Fortune, February 2, 1998). In response to the statement, ‘‘In a divorce in a long-term marriage where the husband works outside the home and the wife is not employed for pay, the wife should be entitled to half of the assets accumulated during marriage,’’ 279 of 300 women agreed and 255 of 300 men agreed. a. What are the sample proportions for the two populat
A health clinic found that in a sample of 200 women, the mean and the standard deviation of their masses are 85.5kg and 10.5kg, respectively. Also, 115 women were found to be over-weight.
a. Find point estimates of the mean mass and proportion of over-weight in women population.
b. Construct a 95% confidence interval for population mean mass.
c. Construct a 95% confidence for proportion of over-weight in women population.
Use a test at the 5% significance level.
Fortune enlisted Yankelovich Partners to poll 600 adults on their ideas about marriage, divorce, and the contribution of the corporate wife to her executive husband (Fortune, February 2, 1998). In response to the statement, ‘‘In a divorce in a long-term marriage where the husband works outside the home and the wife is not employed for pay, the wife should be entitled to half of the assets accumulated during marriage,’’ 279 of 300 women agreed and 255 of 300 men agreed.
a. What are the sample proportions for the two populations, women and men?
b. Test the hypothesis that there is no difference in opinion by the two populations,
using 5% level.
c. What is the point estimate of the difference between the two population means?
Step by step
Solved in 4 steps
