Exercise 9-21 Static Consider the following hypotheses: HO: = 120 HA: 4120 The population is normally distributed with a population standard deviation of 46. (You may find it useful to reference the appropriate table: z table or table) 2-1. Calculate the value of the test statistic with * = 132 and n = 50. (Round final answer to 2 decimal places.) Test statistic 1.84 1-2. What is the conclusion at the 5% significance level? Reject He since the p-value is less than the significance level. Reject He since the p-value is greater than the significance level a-2. What is the conclusion at the 5% significance level? Reject Hy since the p-value is less than the significance level. Reject Hy since the p-value is greater than the significance level. Do not reject Hy since the p-value is less than the significance level. Do not reject Hy since the p-value is greater than the significance level. a-3. Interpret the results at a=0.05. We conclude that the population mean differs from 120. We cannot conclude that the population mean differs from 120. We conclude that the sample mean differs from 120. We cannot conclude that the sample mean differs from 120. b-1. Calculate the value of the test statistic with b-1. Calculate the value of the test statistic with * =108 and n=50. (Negative value should be indicated by a minus sign. Round final answer to 2 decimal places.) Test statistic b-2. What is the conclusion at the 10% significance level? Reject He since the p-value is less than the significance level. Reject Hy since the p-value is greater than the significance level. Do not reject He since the p-value is less than the significance level. Do not reject He since the p-value is greater than the significance level b-3. Interpret the results at a=0.10. b-2. What is the conclusion at the 10% significance level? Reject Ho since the p-value is less than the significance level. Reject Ho since the p-value is greater than the significance level. Do not reject Hy since the p-value is less than the significance level. Do not reject Hy since the p-value is greater than the significance level. b-3. Interpret the results at a = 0.10. We conclude that the population mean differs from 120. We cannot conclude that the population mean differs from 120. We conclude that the sample mean differs from 120. We cannot conclude that the sample mean differs from 120