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26. Expedia would like to test that the average number of Southwest Airlines flights which arrive on time (µ) is 90. A random sample of 140 flights found that 119 arrived on time. Suppose a = 0.05. Then the critical value for the test %3! (Za/2) is a) 1.28

26. Expedia would like to test that the average number of Southwest Airlines flights which arrive on time (µ) is 90. A random sample of 140 flights found that 119 arrived on time. Suppose a = 0.05. Then the critical value for the test %3! (Za/2) is a) 1.28

ENGR.ECONOMIC ANALYSIS
ENGR.ECONOMIC ANALYSIS
14th Edition
ISBN:9780190931919
Author:NEWNAN
Publisher:NEWNAN
Chapter1: Making Economics Decisions
Section: Chapter Questions
Problem 1QTC
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26. Expedia would like to test that the average number of Southwest Airlines flights which arrive on time (u) is 90. A random sample of 140 flights found that 119 arrived on time. Suppose a = 0.05. Then the critical value for the test %3D (Za/2) is a) 1.28 b) 1.96 c) 2.33 d) 2.58 O b O a Oc
Transcribed Image Text:26. Expedia would like to test that the average number of Southwest Airlines flights which arrive on time (u) is 90. A random sample of 140 flights found that 119 arrived on time. Suppose a = 0.05. Then the critical value for the test %3D (Za/2) is a) 1.28 b) 1.96 c) 2.33 d) 2.58 O b O a Oc
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