HW 8 Practice for the Final Exam: Problem 22 Previous Problem Problem List Next Problem (1 point) A manufacturer of detergent claims that the contents of boxes sold weigh on average at least 30 ounces. The distribution of weights is known to be normal with standard deviation 0.7. A random sample of 27 boxes yielded an average weight of 30.3 ounces. Suppose an inspector wants to test the null hypothesis that the population mean weight is at least 30 ounces. That is, test the null hypothesis Ho : H = 30 against the alternative hypothesis Ha : M 90 using a. = .05, find the following: (a) Test statistic: (b) P-value: The conclusion for this test is: A. Reject the null hypothesis B. There is insufficient evidence to reject the null hypothesis C. None of the above