9.3

Q1

Consider the following hypothesis test: Ho: p = 18 Ha: u # 18 A sample of 48 provided a sample mean @ = 17 and a sample standard deviation s = 4.5. If necessary, round your answers to two decimal places. Enter negative values as negative numbers. a. Compute the value of the test statistic. b. Use the t distribution table (Table 2 in Appendix B) to compute a range for the p-value. p-value is between and C. At o = 0.05, what is your conclusion? p-value is greater than 0.05, do not reject Ho. d. What is the rejection rule using the critical value? Reject Ho if t is less than or equal to -2.012 or t is greater than or equal to 2.012 What is your conclusion? t = do not reject Ho.Consider the following hypothesis test: Ho: u = 18 Ha: u # 18 A sample of 48 provided a sample mean @ = 17 and a sample standard deviation s = 4.8. Enter negative values as negative numbers. a. Compute the value of the test statistic (to three decimal places). b. Use the t distribution table (Table 2 in Appendix B) to compute a range for the p-value (to two decimal places). p-value is between and C. At o = 0.05, what is your conclusion? p-value is greater than 0.05, do not reject Ho- d. What is the rejection rule using the critical value? Reject Ho if t is less than or equal to -2.012 or t is greater than or equal to 2.012 What is your conclusion (to three decimal places)? t = do not reject Ho.Consider the following hypothesis test: HI]: p. S 27 Ha: p. .5 27 A sample of 5|} provided a sample mean of 23.4.111e population standard deviation is 6. a. Compute the 1uralue of the test statistic {to 2 decimals). I}. What is the p-value {to 4 decimals}? Use the value of the test statistic rounded to 2 decimal places in your calculations. 9 Consider the following hypothesis test: Ho : U S 25 He: u > 25 A sample of 40 provided a sample mean of 26.4. The population standard deviation is 6. a. Compute the value of the test statistic (to 2 decimals). b. What is the p-value (to 4 decimals)? Use the value of the test statistic rounded to 2 decimal places in your calculations