midterm.00 - problem(propose a different design identify...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Midterm 1. For the following incomplete block design, determine whether the design is balanced. Find the interblock and intrablock estimators and their variances. Find the optimal weight π . Test for treatment effects in the intrablock analysis. Block 1 2 3 4 5 A=25.2 A=24.5 A=21.3 A=26.5 B=18.4 B=18.3 B=17.7 B=23.1 C=17.6 C=22.5 C=23.5 C=22.6 D=25.7 D=22.4 D=31.3 D=31.0 E=25.9 E=20.7 E=26.7 E=28.0 2. A student and three friends want to test four different routes for driving home. They decide that time of day, driver, and automobile may be important factors. Can you help them design a study to test for a route effect taking all these blocking variables into consideration? What is a shortcoming of this study? How might you resolve this
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: problem (propose a different design, identify the design and explain how you would test for a route effect)? 3. Gulf, Florida and South Carolina red snapper are tested for population homogeneity. Suppose the variation in the number of times a short tandem repeat marker appears at a polymorpic site has standard deviation 10. How many fish from each population should be sampled if treatment effect τ = (-4 , , 4) is to be detected with 80% power ( α = . 05)? Suppose we want to study treatment effect τ = (-k, , k ) as a function of sample size. What sample sizes do we need to detect τ with 80% power for choices of k from 4 to 10? 1...
View Full Document

This note was uploaded on 10/01/2009 for the course STAT stat706 taught by Professor Johnm.grego during the Spring '08 term at South Carolina.

Ask a homework question - tutors are online