Question

A study conducted by a train transportation authority with a random sample of 300 passengers shows that a passenger had to wait on average 10.3 minutes with a standard deviation of 6.2 minutes to buy his or her ticket. It was found that the actual average waiting time is not 10.3 minutes. Use the 0.05 significance level.

a) Does this evidence suggest that the average waiting time is greater than 10.3? State the null hypothesis and the alternative hypothesis under these conditions.
b) What is the decision rule under the new conditions stated in part (a)? Show the decision rule graphically. Show the rejection region and indicate the critical value.
c) What is the p-value? What is your decision regarding the null hypothesis based on the p-value?

Answer 1

I'm 3.4 + 6.3 and thats you answer use rounding if needed