This question: / point(s) possible During the winter of 2008-2009, the average utility bill for residents of a certain state was $187 per month. A random sample of 30 customers was selected during the winter of 2009-2010, and the average bill was found to be $177.74 with a sample standard deviation of $19.79. Complete parts a and b below. . . .. . a) Using a = 0.05, does this sample provide enough evidence to conclude that the average utility bill in this state was lower in the winter of 2009-2010 than it was in the winter of 2008-2009? Determine the hypotheses. O A. Ho: H # 187 and H1: H = 187 O B. Ho: H = 187 and H1: H # 187 O C. Ho: H 2 187 and H1: H 187 Determine the critical value(s). The critical value(s) is(are). (Round to three decimal places as needed. Use a comma to separate answers as needed.) urc Determine the test statistic, to. ons Time Remaining: 02:36:55 Next