The data is below
Determine the range of values in which you would expect to find the average weekly sales for the entire sales force in your company 90% of the time.
- Calculate the impact of increasing the confidence level to 95%?
- Calculate the impact of increasing the sample size to 150, assuming the same mean and standard deviation, but allowing the confidence level to remain at 90%?
Sales Rep # Average Weekly Sales ($)
1 1228
2 7374
3 1055
4 1859
5 3938
6 1692
7 569
8 4059
9 3689
10 607
11 1370
12 3735
13 3305
14 7228
15 6279
16 1671
17 5708
18 2569
19 4163
20 1519
21 7734
22 784
23 6766
24 7261
25 5034
26 7115
27 6291
28 6287
29 2080
30 7621
31 1047
32 6517
33 5172
34 3876
35 5429
36 4538
37 3786
38 2510
39 4863
40 7246
41 1175
42 641
43 4269
44 7034
45 3406
46 2256
47 3182
48 5178
49 4428
50 1189