quiz03.f00

# Quiz03.f00 - Test 3 St512 Fall 2000 Dickey 1 I want to compare 3 brands(factor B of insect repellent These are the only 3 brands I sell at my store

This preview shows pages 1–2. Sign up to view the full content.

Sheet1 Page 1 Test 3, St512, Fall 2000, Dickey 1. I want to compare 3 brands (factor B) of insect repellent. These are the only 3 brands I sell at my store. I have 4 glass containers (factor C) each with 200 insects and each having an opening through which a volunteer (factor V) can insert his forearm. I have 3 volunteers. I will use every combination (B,C,V) twice in a completely randomized design. Thus I have 3*4*3*2=72 observations. I'll take a photo 10 seconds after arm insertion and measure Y=number of insects on the arm as my response. (A) (12 pts.) Label factors B________, C________ and V__________ as random or fixed. (B) (20 pts.) The ratio of the mean square for the BCV interaction to the error mean square is F=4.0. How many numerator _______ and denominator _______ degrees of freedom does this F statistic have? Is this the proper F test for testing the null hypothesis that there is no BCV interaction? (yes, no) Assuming the error mean square is 10, estimate the BCV variance component ________ . (C)

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 08/01/2008 for the course ST 512 taught by Professor Dickey during the Summer '07 term at N.C. State.

### Page1 / 2

Quiz03.f00 - Test 3 St512 Fall 2000 Dickey 1 I want to compare 3 brands(factor B of insect repellent These are the only 3 brands I sell at my store

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online