In: Statistics and Probability
Two fuel additives are being tested to determine their effect on gasoline mileage. Seven cars were tested with additive 1 and nine cars were tested with additive 2. The following data show the miles per gallon obtained with the two additives.
Additive 1 | Additive 2 |
---|---|
18.3 | 18.7 |
19.4 | 18.8 |
20.1 | 21.3 |
15.7 | 20.0 |
18.2 | 23.1 |
18.6 | 18.7 |
17.5 | 19.8 |
20.7 | |
19.2 |
Find the value of the test statistic and p-value.
please do step by step? I saw there was a similar problem but table 8 in Appendix B Tables isn't there so I wasn't able to finish the answer.
Let denote the average gasoline mileage for cars with additive 1 and additive 2 respectively.
Conclusion in probelm context :
There is significant effect on gasoline mileage.