Question
EmpID YearsatCompany Degree 8681149.843 1 Bachelor 13986439.49 4 Bachelor 20056816.3 3 Bachelor 72690935.88 3 Bachelor 72846332.68...
| EmpID | YearsatCompany | Degree |
| 8681149.843 | 1 | Bachelor |
| 13986439.49 | 4 | Bachelor |
| 20056816.3 | 3 | Bachelor |
| 72690935.88 | 3 | Bachelor |
| 72846332.68 | 2 | Bachelor |
| 74588587.36 | 2 | Bachelor |
| 90631837.59 | 2 | Bachelor |
| 111205690.9 | 1 | Bachelor |
| 119156502.3 | 3 | Bachelor |
| 144227921.1 | 1 | Bachelor |
| 150424183.2 | 2 | Bachelor |
| 165255147.7 | 3 | Bachelor |
| 186905590.8 | 3 | Bachelor |
| 200099593.9 | 6 | Bachelor |
| 231905684.7 | 1 | Bachelor |
| 242855466.3 | 2 | Bachelor |
| 249422782.1 | 4 | Bachelor |
| 254705093 | 3 | Bachelor |
| 266686158.5 | 1 | Bachelor |
| 295652488.9 | 2 | Bachelor |
| 302498709.5 | 3 | Bachelor |
| 313871898.2 | 1 | Bachelor |
| 367441047.6 | 7 | Bachelor |
| 378595037.5 | 1 | Bachelor |
| 430273383 | 7 | Bachelor |
| 444542567.2 | 1 | Bachelor |
| 478126897.6 | 3 | Bachelor |
| 514404306.1 | 1 | Bachelor |
| 519249642 | 9 | Bachelor |
| 567534756.7 | 4 | Bachelor |
| 574658351.1 | 3 | Bachelor |
| 574965478.3 | 2 | Bachelor |
| 632150736.3 | 2 | Bachelor |
| 632215121.7 | 1 | Bachelor |
| 639983427 | 4 | Bachelor |
| 644262262.4 | 4 | Bachelor |
| 653555217.1 | 4 | Bachelor |
| 654141485.5 | 2 | Bachelor |
| 708474174.1 | 3 | Bachelor |
| 725829432.2 | 2 | Bachelor |
| 772009115.2 | 1 | Bachelor |
| 787572213.6 | 6 | Bachelor |
| 791826067.2 | 3 | Bachelor |
| 796779981.3 | 8 | Bachelor |
| 824671361.1 | 2 | Bachelor |
| 847831761.3 | 2 | Bachelor |
| 895416732 | 3 | Bachelor |
| 912832616.1 | 2 | Bachelor |
| 918479466.2 | 2 | Bachelor |
| 951393143.8 | 2 | Bachelor |
| 976472313.2 | 3 | Bachelor |
| 17065469.41 | 1 | MBA |
| 78151561.28 | 6 | MBA |
| 87192383.5 | 5 | MBA |
| 92387659.73 | 5 | MBA |
| 149483521.7 | 1 | MBA |
| 183123179.1 | 1 | MBA |
| 203583772.4 | 2 | MBA |
| 206005405.9 | 2 | MBA |
| 301680743.6 | 2 | MBA |
| 322982399.1 | 7 | MBA |
| 325937835 | 12 | MBA |
| 338289909.4 | 7 | MBA |
| 342662230.9 | 5 | MBA |
| 396687866.8 | 11 | MBA |
| 413983433.4 | 7 | MBA |
| 420115938 | 6 | MBA |
| 470273203.8 | 1 | MBA |
| 503301232 | 5 | MBA |
| 505495545.5 | 5 | MBA |
| 538305216.8 | 2 | MBA |
| 558137120.6 | 2 | MBA |
| 560755230.8 | 6 | MBA |
| 561029130.9 | 2 | MBA |
| 566896973.2 | 7 | MBA |
| 598708725.9 | 9 | MBA |
| 607483310.9 | 2 | MBA |
| 735965616.4 | 1 | MBA |
| 793433790.5 | 7 | MBA |
| 796406558 | 2 | MBA |
| 798595871.8 | 5 | MBA |
| 831261012.9 | 7 | MBA |
| 852785298.2 | 10 | MBA |
| 857930293.3 | 6 | MBA |
| 860386222.6 | 5 | MBA |
| 873435022.9 | 7 | MBA |
| 907235431 | 5 | MBA |
| 924348387.4 | 10 | MBA |
| 925345497.3 | 2 | MBA |
| 944209395.7 | 6 | MBA |
| 969202543 | 8 | MBA |
| 992680460.3 | 2 | MBA |
1. What is the mean difference in Years at Company between employees with a Bachelor degree and those with an MBA? (round to 2 decimal points. ex. 1.22)
2. What is the variance in Years at the Company for employees with an MBA? (round to 2 decimal points. ex. 1.22)
3. What is the t-statistic for the difference In Years at the Company for employees with an Bachelor degree vs an MBA? (round to 2 decimal points. ex. 1.22)
4. Is the difference In Years at the Company for employees with an Bachelor degree vs an MBA significant?
A. Yes. The p-value is less than .001
B. Yes. The p-value is less than .05 but more than .01
C. No
D. Yes. The p-value is less than .01 but more than .001
Homework Answers
Answer #1
Excel Output
| t-Test: Two-Sample Assuming Unequal Variances | ||
| Bachelor | MBA | |
| Mean | 2.882353 | 4.97561 |
| Variance | 3.505882 | 9.07439 |
| Observations | 51 | 41 |
| Hypothesized Mean Difference | 0 | |
| df | 64 | |
| t Stat | -3.88662 | |
| P(T<=t) one-tail | 0.000122 | |
| t Critical one-tail | 1.669013 | |
| P(T<=t) two-tail | 0.000244 | |
| t Critical two-tail | 1.99773 |
1) Mean difference = 2.882353- 4.97561= -2.09
=============================================
=============================================
3. t = -3.89
=============================================
4. A. Yes. The p-value is less than .001
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