In Exercise 3.1 you calculated summary statistics for the sample of 50 student GPAs in the file Studentsl.xls. Return to those data (depicted in figure 1 below) Can you conclude that more than 50% of all students at this school are female? Use α= 0.05. What is the p-value of this test? Can you conclude that the mean GPA of all students at this school is less than 3.000? Use α= 0.05. What is the p-value of this test? Figure 1)
In Exercise 3.1 you calculated summary statistics for the sample of 50 student GPAs in the file Studentsl.xls. Return to those data (depicted in figure 1 below)
- Can you conclude that more than 50% of all students at this school are female? Use α= 0.05. What is the p-value of this test?
- Can you conclude that the mean GPA of all students at this school is less than 3.000? Use α= 0.05. What is the p-value of this test?
Figure 1)
ID Female Major GPA
1 1 4 2.537
2 0 2 3.648
3 1 3 2.981
4 0 2 2.683
5 1 2 3.234
6 1 3 2.467
7 1 1 3.384
8 1 3 3.555
9 0 2 3.263
10 1 1 3.711
11 1 5 1.970
12 1 4 3.406
13 0 1 2.523
14 0 3 1.750
15 1 6 3.191
16 1 2 2.795
17 0 1 2.606
18 0 5 2.397
19 1 6 3.791
20 0 4 3.490
21 0 3 2.421
22 0 5 3.937
23 0 5 2.890
24 1 6 2.246
25 1 2 3.371
26 1 5 3.114
27 0 1 3.084
28 0 5 2.703
29 1 3 3.045
30 0 1 1.948
31 1 1 2.717
32 1 6 1.996
33 1 3 2.870
34 0 5 2.986
35 0 1 3.393
36 1 2 2.740
37 1 6 2.499
38 1 4 3.695
39 1 4 2.664
40 1 5 2.306
41 1 3 3.022
42 1 6 2.776
43 1 5 2.175
44 0 2 3.828
45 0 6 3.410
46 0 4 2.330
47 0 5 3.978
48 1 3 3.503
49 1 4 3.253
50 1 2 2.215
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