need full ans asap

A sample of 36 observations is selected from a normal population The sample mean is 19, and the population standard deviation is 5. Conduct the following test of hypothesis using the 0.05 significance level: -50 1 17 50 a Is this a one or two tailed test? (Click to select) b. What is the decision rule? Reject He and accept , when z (Click to select) v in the region from - 1,96 and 196. c. What is the value of the test statistic? (Negative answer should be indicated by a minus sign. Round the final answer to 2 decimal places.) Value of the test statistic d. What is your decision regarding He? (Click to select) ~| He