Statistical Analysis HW 9: Testing Equality of Population Variances, Assignments of Data Analysis & Statistical Methods

Download Statistical Analysis HW 9: Testing Equality of Population Variances and more Assignments Data Analysis & Statistical Methods in PDF only on Docsity! HW 9 - STA 6166 Due on Thursday, March 23, 2006 Do the following problems (all populations can be assumed to be normal): 1. Problem 7.8. 2. Problem 7.10. Do only parts (a) and (b). Use α = .05 in part (a). 3. Problem 7.12. Do only part (b). Use α = .05. 4. A wildlife biologist was interested in determining the effect of raising deer in captivity on the size of the deer. She decided to consider three populations: deer raised in the wild, deer raised on large hunting ranches, and deer raised in zoos. She randomly selected 8 deer in each of the three environments and weighed the deer at age 1 year. The weights(in ponds) are given in the following table: Environment Weight Wild 114.7 128.9 111.5 116.4 134.5 126.7 120.6 129.59 Ranch 120.4 91.0 119.6 119.4 150.0 169.7 100.9 76.1 Zoo 103.1 90.7 129.5 75.8 182.5 76.8 87.3 77.3 (a) Use the data to test equality of population variances on the basis of Hart- ley’s test. Let α = .05. (b) Use Levene’s test in SAS to test the equality of population variances (α = .05). Give also the p-value for this test. 1