question archive The heights of ¼ sheet cakes baked by a bakery have been normally distributed with a mean of m0 = 2
The heights of ¼ sheet cakes baked by a bakery have been normally distributed with a mean of m0 = 2
Subject:StatisticsPrice: Bought3
The heights of ¼ sheet cakes baked by a bakery have been normally distributed with a mean of m0 = 2.05 inchesand a standard deviation of s = 0.12 inches, respectively. Before deciding if the baking procedure needs adjustment, a random sample of n = 9 such cakes is selected and the sample mean is x = 2.01 inches. A hypothesis test at a significance level a = 0.05 is to be conducted to test if this mean has changed.Use the following scenario and data for questions 19 to 22:The heights of ¼ sheet cakes baked by a bakery have been normally distributed with a mean of 0 2.05 inchesand a standard deviation of 0.12 inches, respectively. Before deciding if the baking procedure needsadjustment, a random sample of n 9 such cakes is selected and the sample mean is x 2.01 inches. A hypothesistest at a significance level 0.05 is to be conducted to test if this mean has changed.19. The null and alternative hypotheses should be (3)20. Using the critical value to set up the decision rule, the decision rule should be (3)21. The test statistic of this test is (3)22. The conclusion of this test should be (3)
