Hypothesis testing question please help. Thank you ~

Q1.

A courier service advertises that its mean delivery time is less than 4.5 hours for local deliveries. A random sample of 68 deliveries is taken and the mean and standard deviation were found to be 4.34 hours and 45 minutes respectively. 1.Use the tables in the textbook to determine the critical value for the test statistic, if alpha = 5%. State your answer correct to three decimal places. 2. Give the calculated test statistic correct to 3 decimal places.

Q2.

It is stipulated in the Queensland award that a full-time bar attendant should work 36.75 hours per week. However, the secretary of the Queensland Council of Unions believes that the average work hours per week of full-time bar attendants is not that specified in the award. From a random sample of 53 workers, it was found that the average working week was 37.08 hours with a variance of 1.24 hours squared. On the basis of this evidence, the union secretary would

A.not reject the null hypothesis at the 10% level.

B.reject the null hypothesis at the 10% level but not at the 5% level.

C.reject the null hypothesis at the 5% level but not at the 2% level.

D.reject the null hypothesis at the 2% level but not at the 1% level.