Kimberly Ragnauth
BioStats HW#3
February 17th, 2016
Section A08
Chapter 8
2.) a. Negative
b.This positive association can be accounted for the fact that the owners have higher
income. Since they have higher incomes they can afford cars that are more fuel

Kimberly Ragnauth
BioStats 148 HW #1
January 31st, 2016
Section A08
Chapters 1&2
3.) The parents who refused to allow their children to participate in the experiment were
not correct in thinking that their child would have a higher risk of polio. This is

Kimberly Ragnauth
BioStats HW#2
February 7th, 2015
Section A08
Chapter 4
5.) 80mm is unusually low.
115mm is average.
120mm is average.
210 is unusually high.
6.) a. 40- iii
50- ii
60- i
b. median is less than average- iii
median is about equal to the ave

Kimberly Ragnauth
BioStats HW#6
March 6th, 2016
Section A08
Chapter 14
1. a. P(both show 3)= () x ()= 1/36,
b. P(same number)= (1/36) x (1/36) x (1/36) x (1/36) x (1/36) x (1/36)= 6/36
4. Option one is better because by having the chance of having at leas

Kimberly Ragnauth
BioStats HW#4
February 24th, 2016
Section A08
Chapter 10
1.) (i)- A
(ii)- C
(iii)- B
(iv)- Not given.
2.) a.) The estimated average score at age 35 for all the individuals who scored 115 at age 18 is
112.
b.) The predicted score is 112 a

Kimberly Ragnauth
BioStats HW#11
April 21st, 2016
Section A08
Chapter 22
2.)
Chapter 23
1.) The expected value for the draws will be 100. The SD is 20. The SE for the sum of draws will
be x 20= 400. The SE for the average is 400/400=1. You need to then co

Kimberly Ragnauth
Biostats HW#10
April 13th, 2016
Chapter 20
4.) There is a 69% chance that the sum of the gross income is over $33,000,000.
7.) A. True
B. False
C. True
D. False
E. False
F. False
9.) 200
11 or 12
12.) 952
37 or 38
Chapter 21
2.) a. Fract

Kimberly Ragnauth
BioStats HW#5
February 28th, 2016
Section A08
Chapter 12
4.) a. 1
b. The line is not the regression line because based on the data the regression line would
slope downwards. This line could probably be the average value of the Y variable