Question: Note. Use a = 0.05 for all tests. The Bank Call Center data shows the data on 70 former employees at one of the bank's
Note. Use a = 0.05 for all tests.
The Bank Call Center data shows the data on 70 former employees at one of the bank's call centers.
a. Is the average length of service for all employees shorter than 2 years?
- What are the null and alternative hypotheses?
- Pick the correct test and calculate the test statistics.
- Is the alternative hypothesis supported? Why?
b. Is the average length of service for individuals without a college degree the same as those with a college degree?
- What are the null and alternative hypotheses?
- Pick the correct test and calculate the test statistics.
- Is the alternative hypothesis supported? Why?
c. Are employees actual length of service shorter than their planned length of service?
1. What are the null and alternative hypotheses?
2. Pick the correct test and calculate the test statistics.
3. Is the alternative hypothesis supported? Why?
A Gender 1 B Prior Call Center Experience 1 College Degree 0 0 2 3 0 0 1 1 D E Length of Service (years) lanned Length of Service (years 0.36 0.5 0.3 0.5 0.4 0.5 0.53 1 0.6 1 4 1 1 1 5 0 0 0 1 0 6 7 1 0 0.6 1 8 1 1 0 1 0 0.64 1 9 9 1 0 0.77 1 10 1 0 0.84 1 0 1 11 0 0 0.84 1 12 1 1 0 0.98 1 13 0 0 1 0.98 1 14 0 1 0 0.97 1 15 0 0 1 0 0.97 1 16 1 0 0 1 1.06 1.05 17 0 0 0 1 1 0 1 1.11 1 18 19 0 0 1 20 1 1 0 1 0 0 0 0 1 1 1 0 0 1 1 1 1 0 0 0 1 1 0 1 1 1 0 1 1 0 1 0 1 1 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 0 1 1 1 1 0 1.13 1.2 1.14 1.23 1.29 1.24 1.33 1.28 1.42 1.4 1.43 1.47 1.68 1.66 1.7 1.73 1.78 1.75 1.75 1.83 1.87 0 0 1 0 0 1 0 1 1 2 0 0 0 2 1 0 2 1 0 1 1 2 2 1 1 1 36 0 0 0 2 37 1 0 0 2 38 0 0 1 2 2 39 1 0 0 40 0 1 0 1.94 2 0 0 0 1.9 2 41 42 1 0 0 2 3 43 0 0 1 2 2.01 2.12 44 0 1 0 2.5 45 0 0 1 2.07 2.17 46 1 0 0 47 1 1 1 2.17 48 0 1 1 2.16 1 1 1 49 50 2.17 2.15 0 1 0 0 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 51 0 0 2.13 0 1 1 1 0 1 52 53 54 55 56 1 0 0 0 0 0 1 1 0 ww 0 0 57 58 1 0 0 3 0 1 59 1 0 3 60 0 1 0 3 0 1 3 0 0 2.13 2.15 2.17 2.27 2.5 2.57 2.52 2.86 2.89 2.94 3.02 3.04 3.13 3.32 3.32 3.5 3.51 4.04 4.41 7.05 0 o 3 0 1 1 0 3 1 1 0 3.5 0 61 62 63 64 65 66 67 68 69 70 71 0 1 0 0 0 0 3.5 3.5 3.5 1 0 0 1 0 1 0 3.5 5 0 0 0 0 5 0 0 0 10 A Gender 1 B Prior Call Center Experience 1 College Degree 0 0 2 3 0 0 1 1 D E Length of Service (years) lanned Length of Service (years 0.36 0.5 0.3 0.5 0.4 0.5 0.53 1 0.6 1 4 1 1 1 5 0 0 0 1 0 6 7 1 0 0.6 1 8 1 1 0 1 0 0.64 1 9 9 1 0 0.77 1 10 1 0 0.84 1 0 1 11 0 0 0.84 1 12 1 1 0 0.98 1 13 0 0 1 0.98 1 14 0 1 0 0.97 1 15 0 0 1 0 0.97 1 16 1 0 0 1 1.06 1.05 17 0 0 0 1 1 0 1 1.11 1 18 19 0 0 1 20 1 1 0 1 0 0 0 0 1 1 1 0 0 1 1 1 1 0 0 0 1 1 0 1 1 1 0 1 1 0 1 0 1 1 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 0 1 1 1 1 0 1.13 1.2 1.14 1.23 1.29 1.24 1.33 1.28 1.42 1.4 1.43 1.47 1.68 1.66 1.7 1.73 1.78 1.75 1.75 1.83 1.87 0 0 1 0 0 1 0 1 1 2 0 0 0 2 1 0 2 1 0 1 1 2 2 1 1 1 36 0 0 0 2 37 1 0 0 2 38 0 0 1 2 2 39 1 0 0 40 0 1 0 1.94 2 0 0 0 1.9 2 41 42 1 0 0 2 3 43 0 0 1 2 2.01 2.12 44 0 1 0 2.5 45 0 0 1 2.07 2.17 46 1 0 0 47 1 1 1 2.17 48 0 1 1 2.16 1 1 1 49 50 2.17 2.15 0 1 0 0 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 51 0 0 2.13 0 1 1 1 0 1 52 53 54 55 56 1 0 0 0 0 0 1 1 0 ww 0 0 57 58 1 0 0 3 0 1 59 1 0 3 60 0 1 0 3 0 1 3 0 0 2.13 2.15 2.17 2.27 2.5 2.57 2.52 2.86 2.89 2.94 3.02 3.04 3.13 3.32 3.32 3.5 3.51 4.04 4.41 7.05 0 o 3 0 1 1 0 3 1 1 0 3.5 0 61 62 63 64 65 66 67 68 69 70 71 0 1 0 0 0 0 3.5 3.5 3.5 1 0 0 1 0 1 0 3.5 5 0 0 0 0 5 0 0 0 10
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