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Usability professionals salary survey. The Usability

Statistics for Business and Economics | 12th Edition | ISBN: 9780321826237 | Authors: James T. McClave, P. George Benson, Terry T Sincich

Problem 9E Chapter 12

Statistics for Business and Economics | 12th Edition

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Statistics for Business and Economics | 12th Edition | ISBN: 9780321826237 | Authors: James T. McClave, P. George Benson, Terry T Sincich

Statistics for Business and Economics | 12th Edition

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Problem 9E

Usability professionals salary survey. The Usability Professionals’ Association (UPA) supports people who research, design, and evaluate the user experience of products and services. Recently, the UPA conducted a salary survey of its members (UPA Salary Survey, August 18, 2009). One of the report’s authors, Jeff Sauro, investigated how much having a PhD affects salaries in this profession and discussed his analysis on the blog, www.measuringusability. com. Sauro fit a first-order multiple regression model for salary (y, in dollars) as a function of years of experience (x1), PhD status (x2 = 1 if PhD, 0 if not), and manager status (x3 = 1 if manager, 0 if not). The following prediction equation was obtained:

a. Predict the salary of a UPA member with 10 years of experience who does not have a PhD, but is a manager.

b. Predict the salary of a UPA member with 10 years of experience who does have a PhD, but is not a manager.

c. The following coefficient was reported: R2a = .32. Give a practical interpretation of this value.

d. A 95% confidence interval for b1 was reported as (2700, 3200). Give a practical interpretation of this result.

e. A 95% confidence interval for b2 was reported as (11,500, 22,300). Give a practical interpretation of this result.

f. A 95% confidence interval for b3 was reported as (7,600, 14,600). Give a practical interpretation of this result.

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International Business: Chapter 3 ● The legal environment ○ Differences in legal systems ■ Rule of law ■ Role of lawyers ■ Burden of proof ■ Right to judicial review ■ laws ○ Bases of different...

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Textbook: Statistics for Business and Economics
Edition: 12th
Author: James T. McClave, P. George Benson, Terry T Sincich
ISBN: 9780321826237

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