Ten years ago, the average amount of time a family spent eating supper together was 27.8 minutes. A sociologist believes this average has decreased. She randomly selects a sample of 12 families and finds the sample average to be 24.307 minutes. The sample data look about bell-shaped. She calculated a test statistic of t = -1.561.(a) What is the p-value? (b) If she conducts the test at significance level 0.05, what should the conclusion be? a. Do not reject the null hypothesis. There is evidence to indicate that the average time has decreased at significance level 0.05.b. Reject the null hypothesis. There is evidence to indicate that the average time has decreased at significance level 0.05. c. Do not reject the null hypothesis. There is not enough evidence to indicate that the average time has decreased at significance level 0.05.d. Reject the null hypothesis. There is not enough evidence to indicate that the average time has decreased at significance level 0.05.