The results of a paired-difference test are shown below.

d= -4.2

sd= 0.25

n = 25

a.) Construct and interpret a 99% confidence interval estimate for the paired difference in mean values. (round to two decimal places as needed.) and choose the correct answer below.

A. This interval will contain the true population mean 99% of the time

B. If many random samples of this size were taken and intervals constructed, 99% of them would contain the true population mean

C. Approximately 99% of the differences will be contained in the interval

D. There is a 99% chance that the true population mean in contained in the interval

b.) Construct and interpret a 90% confidence interval estimate for the paired difference in mean values. (round to two decimal places as needed.) and choose the correct answer below.

A. This interval will contain the true population mean 90% of the time

B. If many random samples of this size were taken and intervals constructed, 90% of them would contain the true population mean

C. Approximately 90% of the differences will be contained in the interval

D. There is a 90% chance that the true population mean in contained in the interval