James Quiroga
MA3110
February 20, 2014
Unit 4 Problem Set 1
Section 6-3 Pg. 285 #6
M = 100, STD = 15, X = 80
Z = (80-100)/15 = -1.33333
Area of shaded region = 0.9082
Section 6-3 Pg. 285 #8
M = 100, STD = 15, X = 75 and X = 110
Z= (75-100)/15 = -1.67
Z= (

James Quiroga
MA3110
January 11, 2014
Unit 2 Problem Set 1
Section 3-2 Page 107 Exercise 8
They are not consistent
Section 3-3 Page 123 Exercise 8
Yes, it is unusual
Section 3-4 Page 141 Exercise 8
M - 92.95 in
- 69.6 in
A - 2.8 in
Bao`s Z-score = 8.34 i

James Quiroga
MA3110
December 14, 2013
Unit 1 Problem Set 1
Using Statistics Thinking and Summarizing Data
Section 1-2 Pg.11
Surgery vs. Splints
a. Yes surgery is better than splints
b. Yes, there is a 20% difference in success rates.
c. Yes
d. Yes surger

James Quiroga
MA3110
February 15, 2014
Unit 3 Problem Set 1
Pg. 230 Ex. 10
X
0
1
2
3
4
5
P(x)
.528
.360
.098
.013
.001
0+
P(x) = .528 + .360 + .098 + .013 + .001 + (0+) = 1
This is a probability distribution because p(x) = 1
Mean = .599 or .6
Standard Dev