Refer to the previous exercise. For the 530 males in the sample who gave a numeric response from 0 to 6, the mean was 2.51 and the standard deviation was 0.87.
a. Find the point estimate of the population mean and show that its standard error is 0.038.
b. The 95% confidence interval is 2.43 to 2.59. Explain what “95% confidence” means for this interval.
c. Compared to the interval for females, is there much evidence of a difference between the means? Explain.

Previous exercise

The 2012 General Social Survey asked, “What do you think is the ideal number of children for a family to have?” The 590 females who gave a numeric response from 0 to 6 had a median of 2, mean of 2.56, and standard deviation of 0.84.