Question

I have the mean i just need help on the other parts:. A researcher claims that the average age of people who buy theatre tickets is 44. A sample of 30 is selected and their ages are recorded as shown below. The standard deviation is 7. At 
= 0.05 is there enough evidence to reject the researcher’s claim? Show all work.
45 38 60 45 63 37 45 43 52 48
67 38 45 44 41 45 50 45 55 39
45 46 57 41 39 41 66 39 39 55