Is the mean textbook price for the College Bookstore different from 150 ...

     

Author

Title

Bookstore 

Online 

 

Pride

Business   10/e

132.75

135.91

 

Carroll

Business   and Society

204.50

174.58

 

Quinn

Ethics for   the Information Age

81.00

65.00

 

Bade

Foundations   of Microeconomics 5/e

153.50

120.43

 

Case

Principles   of Macroeconomics 9/e

154.50

215.99

 

Brigham

Financial   Management 13/e

217.00

195.10

 

Griffin

Organizational   Behavior 9/e

199.75

163.71

 

George

Understanding   and Managing Organizational Behaviior 5/e

149.00

177.63

 

Grewel

Marketing   2/e

135.00

95.89

 

Barlow

Abnormal   Psychology

184.25

145.49

 

Foner

Give Me   Liberty: Seagull Ed. (V2) 2/e

46.50

35.60

 

Federer

Mathematical   interest Theory 2/e

89.95

91.69

 

Hoyle

Advanced   Accounting 9/e

123.02

147.41

 

Haviland

Talking   About People 4/e

58.50

51.93

 

Fuller

Information   Systems Project Management

89.25

81.69

 

Pindyck

Macroeconomics   7/e

189.25

130.32

 

Mankiw

Macroeconomics   7/e

179.25

149.48

 

Shapiro

Multinational   Financial Management 9/e

210.25

145.30

 

Losco

American   Government 2010 Edition

67.75

55.16

Answer each of the questions below using hypothesis testing. Follow the seven-step procedure for testing a hypothesis in your text book as a guide for answering the questions. Use a .05 significance level. In each case, calculate the p-value.

Is the mean textbook price for the College Bookstore different from 150?

Is the mean text book price for the Online Retailer less than 150?

Is the mean textbook price for the College Bookstore greater than that for the Online Retailer? Use a pooled t-test.

Is the mean textbook price for the College Bookstore greater than that for the Online Retailer? Use a paired difference t-test.