Part a test the hypothesis that in the population there is no difference in mean salary between employees who graduated from state university and those who did not. in absolute terms what is the observed value of the test statistic?
0.003
0.998
3.139
9.313
part b test the hypothesis that in the population there is no difference in mean salary between employees who graduated from state university and those who did not. in absolute terms what is the critical value of the test statistic?
4.001
3.139
8.489
1.998
part c test the hypothesis that in the population there is no difference in mean salary between employees who graduated from state university and those who did not. what is your conclusion about the null hypothesis?
failt to reject the null hypothesis
reject the null hypothesis
both a and b
neither a nor b
data:
employee starting salary on road pct state univ cis degree stayed 3 years tenure
1 38900 57% yes yes no 11
2 42300 68% yes yes no 5
3 39800 75% no yes no 21
4 35700 29% no yes yes
5 40400 71% no yes no 19
6 36400 62% no yes no 18
7 37300 41% yes no yes
8 36600 37% no yes no 17
9 34600 65% no yes no 20
10 42300 53% yes yes no 16
11 37800 73% no yes yes
12 39700 60% no yes no 12
13 36100 56% yes yes yes
14 36100 42% yes yes yes
15 33800 35% no yes yes
16 38900 36% no yes yes
17 35500 50% no yes no 15
18 37600 58% no yes yes
19 38100 78% yes yes yes
20 38300 16% no no yes
21 34600 29% no yes yes
22 36300 26% no yes yes
23 37200 59% yes yes no 14
24 37700 55% yes yes yes
25 36600 45% no yes no 13
26 41000 81% yes yes no 9
27 40800 111% yes yes no 7
28 36700 56% yes yes yes
29 37700 56% no yes no 22
30 37700 42% no yes no 11
31 39300 69% yes yes no 16
32 37500 50% no yes no 18
33 4 69% yes yes no 9
34 41500 64% yes no no 5
35 39600 72% no yes no 18
36 36900 42% no yes yes
37 39500 62% no yes no 5
38 37800 20% no yes no 23
39 38600 57% no yes no 8
40 40600 70% yes yes yes
41 41600 63% yes yes yes
42 40800 44% no no yes
43 36200 68% no yes no 31
44 39600 59% no yes no 10
45 36100 56% yes yes yes
46 36100 42% no yes yes
47 39500 53% yes yes no 17
48 39100 38% no yes yes
49 40300 53% yes yes yes
50 38800 78% yes yes yes
51 39400 34% yes yes no 27
52 38400 23% no yes yes
53 35200 33% no yes yes
54 36100 24% no no yes
55 37100 44% no yes yes
56 37200 64% yes yes no 23
57 36800 46% yes no yes
58 36500 27% no no yes
59 35900 29% no no yes
60 37900 76% yes yes no 14
61 37900 58% no yes no 26
62 37900 28% no yes no 14
63 36700 37% no yes yes
64 37400 49% no yes no 19
65 38200 62% yes yes yes
66 36600 51% yes yes no 7