Refer to the previous exercise. For the 604 males in the sample, the mean was 3.06 and

Question:

Refer to the previous exercise. For the 604 males in the sample, the mean was 3.06 and the standard deviation was 1.92.
a. Find the point estimate of the population mean, and show that its standard error is 0.078.
b. The 95% confidence interval is 2.91 and 3.21. Explain what “95% confidence” means for this interval.