SOLUTION: I am so lost on what to do on this problem. Taking stats online so have no one on one help...Please help and thank you for your support and time. I greatly appreciate it. A res

Algebra ->  Probability-and-statistics -> SOLUTION: I am so lost on what to do on this problem. Taking stats online so have no one on one help...Please help and thank you for your support and time. I greatly appreciate it. A res      Log On


   

Question 494566: I am so lost on what to do on this problem. Taking stats online so have no one on one help...Please help and thank you for your support and time. I greatly appreciate it.
A researcher claims that the average age of people who buy theatre tickets is 39. A sample of 30 is selected and their ages are recorded as shown below. The standard deviation is 9. At a = 0.05 is there enough evidence to reject the researcher’s claim? Show all work.

43
45
43
45
41
36
42
37
43
37

24
39
40
46
42
47
41
37
38
43

79
41
47
45
37
35
39
39
37
36
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
A researcher claims that the average age of people who buy theatre tickets is 39. A sample of 30 is selected and their ages are recorded as shown below. The standard deviation is 9. At a = 0.05 is there enough evidence to reject the researcher’s claim? Show all work.
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Suggestion:
When you post a question with data that requires the sample mean,
and sample standard deviation, you should calculate those numbers
(using a calculator) and not list the data. Those tasks are basic
to the problem but time-consuming for those of us you are asking
to help.
Cheers,
Stan H.