Chapter 9 Hypothesis Tests emolqqu2 .8 ounces is filling mechanism. From past data, a population standard deviation o = assumed. A quality control inspector selects a sample of 30 items every hour and at that time makes the decision of whether to shut down the line for readjustment. The level of significance is a = .05. a. State the hypothesis test for this quality control application. b. If a sample mean of x = 16.32 ounces were found, what is the p-value? What actic would you recommend? = c. If a sample mean of x 15.82 ounces were found, what is the p-value? What acti would you recommend? d. Use the critical value approach. What is the rejection rule for the preceding hypothesis testing procedure? Repeat parts (b) and (c). Do you reach the same conclusion? 65. Scholarship Examination Scores. At Western University the historical mean of scholarship examination scores for freshman applications is 900. A historical popul the assistant dean us