Loose Leaf for Statistical Techniques in Business and Economics
17th Edition
ISBN: 9781260152647
Author: Douglas A. Lind
Publisher: McGraw-Hill Education
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Chapter 12, Problem 2P
a.
To determine
State the hypotheses.
b.
To determine
Write the decision rule.
c.
To determine
Find the decision.
d.
To determine
Interpret the context of the study.
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State the null and the alternative hypotheses
An economist believes he can show that the average starting salary for electrical engineer's exceeds the average starting salaries for computer science majors. We test the hypotheses
H0: ?1−?2=0μ1−μ2=0 versus H1: ?1−?2>0μ1−μ2>0
at 1% level of significance. Here, the average starting salary of electrical engineers, and denotes the average starting salary of a computer science major. We test these hypotheses by obtaining a random sample of 500 electrical engineer's starting salaries and independently, we obtain a random sample of 500 starting salaries for computer science majors. The results of the two-samples are recorded in the table below:
Electrical Engineers
Computer Majors
Sample Size
500
500
Sample average
60000
58,500
Sample Standard Deviation
8,000
13,000
Compute the p-value.
21a. Step 1: Which of the following is the correct set of hypotheses?A. H0: Cravings and relapse are not independent; and H1: Cravings and relapse are independent
B. H0: Cravings and relapse are independent; and H1: Cravings and relapse are not independent
C. H0: u1 = u2 = u3 = u4; and H1: At least one of the categories will be different than the others.
21b. Expected frequencies for: (round answers to 2 decimal places)
Cravings-Yes/Relapse-Yes fe = _______
Cravings-Yes/Relapse-No fe = ________
21c. Expected frequencies for: (round answers to 2 decimal place)
Cravings-No/Relapse-Yes fe = _________
Cravings-No/Relapse-No fe = __________
Chapter 12 Solutions
Loose Leaf for Statistical Techniques in Business and Economics
Ch. 12 - Steele Electric Products Inc. assembles cell...Ch. 12 - What is the critical F value when the sample size...Ch. 12 - Prob. 2ECh. 12 - Prob. 3ECh. 12 - Prob. 4ECh. 12 - Prob. 5ECh. 12 - Prob. 6ECh. 12 - Prob. 2SRCh. 12 - Prob. 7ECh. 12 - Prob. 8E
Ch. 12 - Prob. 9ECh. 12 - Prob. 10ECh. 12 - Prob. 3SRCh. 12 - Prob. 11ECh. 12 - The following are six observations collected from...Ch. 12 - Prob. 13ECh. 12 - Prob. 14ECh. 12 - Prob. 4SRCh. 12 - Prob. 15ECh. 12 - For exercises 15 and 16, conduct a test of...Ch. 12 - Prob. 17ECh. 12 - Prob. 18ECh. 12 - Prob. 5SRCh. 12 - Prob. 19ECh. 12 - Prob. 20ECh. 12 - Prob. 21ECh. 12 - Prob. 22ECh. 12 - Prob. 23CECh. 12 - Prob. 24CECh. 12 - Prob. 25CECh. 12 - Prob. 26CECh. 12 - In an ANOVA table, the MSE is equal to 10. Random...Ch. 12 - Prob. 28CECh. 12 - Prob. 29CECh. 12 - Prob. 30CECh. 12 - Prob. 31CECh. 12 - Prob. 32CECh. 12 - Prob. 33CECh. 12 - Prob. 34CECh. 12 - Prob. 35CECh. 12 - Prob. 36CECh. 12 - Prob. 37CECh. 12 - Prob. 38CECh. 12 - Shanks Inc., a nationwide advertising firm, wants...Ch. 12 - Prob. 40CECh. 12 - Prob. 41CECh. 12 - Prob. 42CECh. 12 - Prob. 43CECh. 12 - Prob. 44CECh. 12 - Prob. 45CECh. 12 - Prob. 46CECh. 12 - Prob. 47CECh. 12 - Prob. 48CECh. 12 - Prob. 50DACh. 12 - Prob. 51DACh. 12 - Prob. 1PCh. 12 - Prob. 2PCh. 12 - Prob. 3PCh. 12 - Prob. 4PCh. 12 - Prob. 5PCh. 12 - Prob. 6PCh. 12 - Prob. 7PCh. 12 - Prob. 1CCh. 12 - Prob. 2CCh. 12 - Prob. 1.1PTCh. 12 - The likelihood of rejecting a true null hypothesis...Ch. 12 - Prob. 1.3PTCh. 12 - Prob. 1.4PTCh. 12 - Prob. 1.5PTCh. 12 - Prob. 1.6PTCh. 12 - In a two-tailed test, the rejection region is...Ch. 12 - Prob. 1.8PTCh. 12 - Prob. 1.9PTCh. 12 - Prob. 1.10PTCh. 12 - Prob. 2.1PTCh. 12 - Prob. 2.2PTCh. 12 - Prob. 2.3PT
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