Consider the following hypothesis test: H0: 4 = 15 Ha: H# 15 A sample of 50 provided a sample mean of 14.28. The population standard deviation is 7. a. Compute the value of the test statistic (to 2...

Extracted text: Consider the following hypothesis test: H0: 4 = 15 Ha: H# 15 A sample of 50 provided a sample mean of 14.28. The population standard deviation is 7. a. Compute the value of the test statistic (to 2 decimals). (1f answer is negative, use minus "." sign.) -1.02 b. What is the p-value (to 4 decimals)? 0.3077 c. Using a = .05, can it be concluded that the population mean is not equal to 157 No Answer the next three questions using the critical value approach. d. Using a = .05, what are the critical values for the test statistic (to 2 decimals)? 1.96 e. State the rejection rule: Reject Ho if z is less than the lower critical value and is greater than the upper critical value. f. Can it be concluded that the population mean is not equal to 157 No