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 Custom Homes. Following are the size and price data for custom homes from Exercise 15.24. x 26 27 33 29 29 34 30 40 22 y 540 555 575 577 606 661 738 804 496 At the 0.5% significance level, do the data provide sufficient evidence to conclude that, for custom homes in the Equestrian Estates, size and price are positively linearly correlated?

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.

Custom Homes. Following are the size and price data for custom homes from Exercise 15.24.

At the 0.5% significance level, do the data provide sufficient evidence to conclude that, for custom homes in the Equestrian Estates, size and price are positively linearly correlated?