In an attempt to increase business on Monday nights. a restaurant offers a free dessert with every dinner order. Before the offer. the mean number of dinner customers on Monday was 1513. Following are the numbers of diners on a random sample of 12 days while the offer was in effect. 2116 169 191 152 212 139 142 151 124 2213192 153 Can we conclude that the mean number of diners increased while the free dessert offer was in effect\"? Use a: 01:11 as your level of signicance. and answer the question using outputs from SPSS. [15 points}