Applying the Concepts and SkillsStudy Time and Score. An instructor at Arizona State University asked a random sample of eight students to record their study times in a beginning calculus course. She then made a table for total hours studied (x) over 2 weeks and test score (y) at the end of the 2 weeks. Here are the results. x 10 15 12 20 8 16 14 22 y 92 81 84 74 85 80 84 80 Study Time and Score. Following are the data on total hours studied over 2 weeks and test score at the end of the 2 weeks from Exercise 15.27. x 10 15 12 20 8 16 14 22 y 92 81 84 74 85 80 84 80 a. At the 1% significance level, do the data provide sufficient evidence to conclude that a negative linear correlation exists between study time and test score for beginning calculus students?b. Repeat part (a) using a 5% significance level.
Applying the Concepts and Skills
Study Time and Score. An instructor at Arizona State University asked a random sample of eight students to record their study times in a beginning calculus course. She then made a table for total hours studied (x) over 2 weeks and test score (y) at the end of the 2 weeks. Here are the results.
| x | 10 | 15 | 12 | 20 | 8 | 16 | 14 | 22 |
| y | 92 | 81 | 84 | 74 | 85 | 80 | 84 | 80 |
Study Time and Score. Following are the data on total hours studied over 2 weeks and test score at the end of the 2 weeks from Exercise 15.27.
| x | 10 | 15 | 12 | 20 | 8 | 16 | 14 | 22 |
| y | 92 | 81 | 84 | 74 | 85 | 80 | 84 | 80 |
a. At the 1% significance level, do the data provide sufficient evidence to conclude that a
b. Repeat part (a) using a 5% significance level.
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