Probability and Statistics II
Spring 2015
Austin Lee Nichols, Ph.D.
SOLUTIONS-Chapter 13 Exercises (Due April 13/14)
1. A sociologist claims that the success of college students (measured by their
GPA) is related to their familys income. For a sample of 2
Probability and Statistics II
Spring 2015
Austin Lee Nichols, Ph.D.
Chapter 15 Exercises (Due April 27/28)
1. The following hypotheses are given:
H0: .70
H1: > .70
A sample of 100 observations revealed that = .75. At the .05 significance level,
can the nu
Probability and Statistics II
Spring 2015
Austin Lee Nichols, Ph.D.
Chapter 15 Exercises (Due April 27/28)
1. The following hypotheses are given:
H0: .70
H1: > .70
A sample of 100 observations revealed that = .75. At the .05 significance level,
can the nu
Probability and Statistics II
Spring 2015
Austin Lee Nichols, Ph.D.
Chapter 9 Exercises (Due January 26/27)
1. A sample of 49 observations is taken from a normal population with a standard
deviation of 10. The sample mean is 55. Determine the 99% confiden
Probability and Statistics II
Spring 2015
Austin Lee Nichols, Ph.D.
Chapter 12 Exercises (Due March 16/17)
1. What is the critical value for the following one-tailed test at the .01 significance
level? n1 = 4, 1 = 12; n2 = 7, 2 = 6
2. The following hypoth
Probability and Statistics II
Spring 2015
Austin Lee Nichols, Ph.D.
SOLUTIONS - Chapter 10 Exercises (Due February 9/10)
1. A sample of 36 observations is selected from a normal population. The sample
mean is 12, and the population standard deviation is 3
Probability and Statistics II
Spring 2015
Austin Lee Nichols, Ph.D.
Chapter 10 Exercises (Due February 9/10)
1. A sample of 36 observations is selected from a normal population. The sample
mean is 12, and the population standard deviation is 3. Conduct th
Probability and Statistics II
Spring 2015
Austin Lee Nichols, Ph.D.
Chapter 13 Exercises (Due April 13/14)
1. A sociologist claims that the success of college students (measured by their
GPA) is related to their familys income. For a sample of 20 students
Probability and Statistics II
Spring 2015
Austin Lee Nichols, Ph.D.
SOLUTIONS - Chapter 9 Exercises (Due January 26/27)
1. A sample of 49 observations is taken from a normal population with a standard
deviation of 10. The sample mean is 55. Determine the
Probability and Statistics II
Spring 2015
Austin Lee Nichols, Ph.D.
Chapter 11 Exercises (Due February 25)
1. A sample of 65 observations is selected from one population with a population
standard deviation of 0.75. The sample mean is 2.67. A sample of 50