23.A sample of 64 observations is drawn from any population. The sample mean is 49 and the population standard deviation is 5. The significance level is 0.05. You want to test the following hypotheses:

H0=50

H150

Is it a one-tailed or two-tailed test?

24.What are the conditions for applying the test?

25.Which statistic is correct?

26.What is the decision rule?

27.Calculate the reduced gap. Leave traces of your calculation.

28.What is your conclusion?