Data on the weights(lb) of the contents of cans of diet soda versus the contents of cans of the regular version of the soda is summarized to the right. Assume that the two samples are independent simple random samples selected from normally distributedpopulations, and do not assume that the population standard deviations are equal. Complete parts(a) and(b) below. Use a 0.01 significance level for both parts.

Diet

Regular

1

2

n

25

25

x

0.79732 lb

0.80925 lb

s

0.00446 lb

0.00754 lb