Last year the average age of our clients was 30, and this year we believe it has decreased. We took a sample of 49 clients and found the average age of the sample was 25 and the standard deviation of...

Extracted text: Last year the average age of our clients was 30, and this year we believe it has decreased. We took a sample of 49 clients and found the average age of the sample was 25 and the standard deviation of the sample was 1O. To find the p-value do we look up the test statistic on the t-table or the Z-table? t-table Not enough information to answer Z-table