5. Refer to the data in Table 3.13 regarding the subjects' number of sex partners in the last 12 months A computer printout shows the following information. No. Cases 637 Mean 1.314 SD 5.418 SE of Mean 0.215

a) Let u denote the population mean of this distribution. Report a point estimate of and a point estimate of the population standard deviation.

b) Based on the reported sample size and standard deviation, verify the reported value for the standard error.

c) Construct a 95% confidence interval for u. Interpret.

d) Construct a 99% confidence interval for u. Compare to part (c)