A random sample of 36 magazine subscribers is taken to estimate the mean age of all subscribers. The data follow. Use Excel to construct a 90% confidence interval estimate of the mean age of all of this magazine's subscribers.
Subscriber Age Subscriber Age Subscriber Age
1 39 13 40 25 38
2 27 14 35 26 51
3 38 15 35 27 26
4 33 16 41 28 39
5 40 17 34 29 35
6 35 18 46 30 37
7 51 19 44 31 33
8 36 20 44 32 41
9 47 21 43 33 36
10 28 22 32 34 33
11 33 23 29 35 46
12 35 24 33 36 37