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 150.Following are the numbers of diners on a random sample of 12 Monday nights while the offer was in effect: 206, 169, 191, 152, 212, 139, 142, 151, 174, 220, 192, 153.You may assume that the population has normal distribution.The sample standard deviation is s = 28.46.

Find the test statistic t and select an appropriate conclusion for 0.01 level of significance.

A. Test statistic t=2.46

We conclude that there is not enough evidence to conclude that the mean number of diners increased while the free dessert offer was in effect at 0.01 level of significance.

B. Test statistic t=3.05

We conclude that there is not enough evidence to conclude that the mean number of diners increased while the free dessert offer was in effect at 0.01 level of significance.

C. Test statistic t=3.05

We conclude that the mean number of diners increased while the free dessert offer was in effect.

D. Test statistic t=2.46

We conclude that the mean number of diners increased while the free dessert offer was in effect.