Use the following information for Exercises 18.15 to 18.18. A study of the effects of exercise used rats bred to have hi

[answerhappygod]

Use The Following Information For Exercises 18 15 To 18 18 A Study Of The Effects Of Exercise Used Rats Bred To Have Hi 1 (43.29 KiB) Viewed 28 times

Use the following information for Exercises 18.15 to 18.18. A study of the effects of exercise used rats bred to have high or low capacity for exercise. The 8 high-capacity rats had mean blood pressure 89 millimeters of mercury (mm Hg) and standard deviation 9 mm Hg; the 8 low-capacity rats had mean blood pressure 105 mm Hg with standard deviation 13 mm Hg. 18.15 What is the value of the two-sample t statistic for comparing the two population means? a. 0.5 b.2.86 c.9.65 18.16 We suspect that rats with a low capacity for exercise tend to have a higher blood pressure than rats with a high capacity for exercise. To see if this is true, test these hypotheses for the mean blood pressure of all rats with high capacity (HC) and all rats with low capacity (LC) for exercise: a. Ho: PHC = 89; Lc = 105 versus H. : Muc#89; Lc #105 b. Ho: Muc = MLC versus H : McMLC c. Ho: Muc = MLC versus H : Muc<HLO 18.17 The two-sample i test has degrees of freedom df = 12,46. The P-value corresponding to the hypotheses specified in Exercise 18.16 satisfies a. 0.005<P <0.01. b. 0.01 <P < 0.02. c. 0.02 <P <0.05. Hic is 18.18 We are 95% confident that the difference pelo a. 16 mm Hg b. a value between 3.9 and 28.1 mm Hg. c, a value between 5.1 and 269 mm Hg.