Professor Fair believes that extra time does not improve grades on exams. He randomly divided a group of 300 students into two groups and gave them all the same test. One group had exactly 1 hour in which to finish the test, and the other group could stay as long as desired. The results are shown in the following table. Test at the 0.01 level of significance that time to complete a test and test results are independent. Time A B C F Row Total 1 h 22 41 65 12 140 Unlimited 17 49 86 8 160 Column Total 39 90 151 20 300 (ii) Find the sample test statistic. (Round your answer to two decimal places.)
Professor Fair believes that extra time does not improve grades on exams. He randomly divided a group of 300 students into two groups and gave them all the same test. One group had exactly 1 hour in which to finish the test, and the other group could stay as long as desired. The results are shown in the following table. Test at the 0.01 level of significance that time to complete a test and test results are independent. Time A B C F Row Total 1 h 22 41 65 12 140 Unlimited 17 49 86 8 160 Column Total 39 90 151 20 300 (ii) Find the sample test statistic. (Round your answer to two decimal places.)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Professor Fair believes that extra time does not improve grades on exams. He randomly divided a group of 300 students into two groups and gave them all the same test. One group had exactly 1 hour in which to finish the test, and the other group could stay as long as desired. The results are shown in the following table. Test at the 0.01 level of significance that time to complete a test and test results are independent.
| Time | A | B | C | F | Row Total |
| 1 h | 22 | 41 | 65 | 12 | 140 |
| Unlimited | 17 | 49 | 86 | 8 | 160 |
| Column Total | 39 | 90 | 151 | 20 | 300 |
(ii) Find the sample test statistic. (Round your answer to two decimal places.)
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