
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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The management of Discount Furniture, a chain of discount furniture stores in the Northeast, designed an incentive plan for salespeople. To evaluate this innovative plan, 12 salespeople were selected at random, and their weekly incomes before and after the plan were recorded.
Salesperson | Before | After | ||||||||
Sid Mahone | $ | 320 | $ | 340 | ||||||
Carol Quick | 290 | 285 | ||||||||
Tom Jackson | 421 | 475 | ||||||||
Andy Jones | 510 | 510 | ||||||||
Jean Sloan | 210 | 210 | ||||||||
Jack Walker | 402 | 500 | ||||||||
Peg Mancuso | 625 | 631 | ||||||||
Anita Loma | 560 | 560 | ||||||||
John Cuso | 360 | 365 | ||||||||
Carl Utz | 431 | 431 | ||||||||
A. S. Kushner | 506 | 525 | ||||||||
Fern Lawton | 505 | 619 | ||||||||
Hint: For the calculations, assume the "Before" data as the first sample.
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State the decision rule for 0.05 significance level: H0: μd ≥ 0 and H1: μd < 0. (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.)
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Compute the value of the test statistic. (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)
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