Construct a 90% confidence interval for 1 - 2 with the sample statistics for mean calorie content of two bakeries' specialty pies and Bakery A Bakery B confidence interval construction formula below. Assume the populations are approximately normal with equal variances 1889 cal 1665 cal S1 166 cal 191 cal 6 = 8 ( * 1 - X2 ) - tc G 1 1 my n2