In: Statistics and Probability
A university wishes to evaluate the claim that car ownership affects academic achievement in ungrad students. the university randomly sampled 50 undergrad students who owned cas and 50 who didn't.GPAS for these students are shown in the accompanying excel worksheet. conduct a hypothesis test at the .05 level to determine whether GPAS are different for car owners and non car owners.
a.State hypothesis
b,choice statstical test and jusitfy choice and assumptions.
With +A1:B41cars | Without cars |
3.2 | 3.65 |
1.72 | 2.55 |
3.1 | 3.69 |
1.18 | 2.86 |
2.86 | 3.751 |
1.62 | 3.3 |
2.394 | 2.763 |
3.474 | 2.295 |
2.82 | 2.69 |
2.6 | 3.41 |
2.73 | 3.62 |
1.9 | 3.44 |
3.03 | 3.47 |
2.332 | 3.63 |
1.55 | 2.17 |
3.86 | 2.55 |
1.419 | 2.629 |
1.705 | 2.387 |
1.848 | 2.486 |
2.8 | 3.39 |
3.7 | 2.1 |
3.465 | 3.294 |
2.02 | 3.73 |
2.12 | 3.3 |
3.663 | 3.378 |
2.23 | 2.84 |
2.41 | 3.01 |
1.944 | 2.025 |
3.96 | 2.27 |
2.16 | 2.25 |
3.24 | 2.7 |
2.88 | 3.285 |
3.356 | 2.497 |
2.651 | 3.311 |
3.15 | 3.45 |
3.33 | 3.98 |
1.89 | 2.98 |
3.09 | 4.61 |
1.29 | 2.39 |
1.68 | 2.26 |
1.75 | 3.81 |
2.66 | 3.07 |
3.75 | 2.5 |
3.003 | 3.982 |
3.39 | 3.22 |
3.52 | 3.707 |
3.85 | 3.66 |
1.67 | 2.39 |
2.09 | 3.784 |
3.2 | 3.37 |