Listed in the accompanying table are weights (lb) of samples of the contents of cans of regular Coke and Diet Coke. Assume that the two samples are independent simple random samples selected from normally distributed populations . Do not assume that the population standard deviations are equal. Complete parts (a ) to (b).

Can weights Regular Coke Diet Coke 0.81922 0.77781 0.81498 0.77583 0.81627 0.78955 0.82105 0.78580 0.81807 0.62459 0.78610 0.80519 0.78057 0.81278 0.78308 0.81717 0.78520 0.81101 0.75792 0. 82513 0.76307 0. 78256 0.79233 0. 78522 0.76718