Solution Found!
[Medicine and Science in Sports and Exercise (January 1990).] Let X and Y equal
Chapter 7, Problem 7.2-4(choose chapter or problem)
[Medicine and Science in Sports and Exercise (January 1990).] Let X and Y equal, respectively, the blood volumes in milliliters for a male who is a paraplegic and participates in vigorous physical activities and for a male who is able-bodied and participates in everyday, ordinary activities. Assume that X is \(N(\mu_X , \sigma^2 _X )\) and Y is \(N(\mu Y, \sigma^2_Y)\). Following are n = 7 observations of X:
1612 1352 1456 1222 1560 1456 1924
Following are m = 10 observations of Y:
1082 1300 1092 1040 910
1248 1092 1040 1092 1288
Use the observations of X and Y to
(a) Give a point estimate for \(\mu_X - \mu_Y\).
(b) Find a 95% confidence interval for \(\mu_X - \mu_Y\). Since the variances \(\sigma^2_X\) and \(\sigma^2_Y\) might not be equal, use Welch’s T.
Questions & Answers
QUESTION:
[Medicine and Science in Sports and Exercise (January 1990).] Let X and Y equal, respectively, the blood volumes in milliliters for a male who is a paraplegic and participates in vigorous physical activities and for a male who is able-bodied and participates in everyday, ordinary activities. Assume that X is \(N(\mu_X , \sigma^2 _X )\) and Y is \(N(\mu Y, \sigma^2_Y)\). Following are n = 7 observations of X:
1612 1352 1456 1222 1560 1456 1924
Following are m = 10 observations of Y:
1082 1300 1092 1040 910
1248 1092 1040 1092 1288
Use the observations of X and Y to
(a) Give a point estimate for \(\mu_X - \mu_Y\).
(b) Find a 95% confidence interval for \(\mu_X - \mu_Y\). Since the variances \(\sigma^2_X\) and \(\sigma^2_Y\) might not be equal, use Welch’s T.
ANSWER:Step 1 of 9
Now, find the sample means.
