Q11, 12, 13

Suppose that the sample of 25 cereal boxes indicates a sample mean, 363.5 grams, and the population standard deviation is 15 grams. Determine whether there is evidence at the 0.01 level of significance that the population mean is 368. Step 1: list the hypotheses. Ho : p = 368 H1 : A # 368 Question 11 2 pts Step 2: Calculate the Z-statistic (round to 1 decimal place) Question 12 2 pts Step 3: Check the two critical values, they are O -1.96 and 1.96 O -2.58 and 2.58 O -1.64 and 1.64 O -1.28 and 1.28 Question 13 1 pts Step 4: Since the Z statistic is [ Select ] the interval between the two critical values, we should [ Select ] the null hypothesis. [ Select ] [ Select ] in reject not in not reject