"A bus company advertised a mean time of 150 minutes for a trip between two cities. A consumer group had reason to believe that the mean time was more than 150 minutes. A sample of 40 trips showed a mean x̄= 153 minutes and a standard deviation s=7.5 minutes. At the .05 level of significance, test the consumer group’s belief." Would you do a Z test or T test? is known. True or False ?
"A bus company advertised a mean time of 150 minutes for a trip between two cities. A consumer group had reason to believe that the mean time was more than 150 minutes. A sample of 40 trips showed a mean x̄= 153 minutes and a standard deviation s=7.5 minutes. At the .05 level of significance, test the consumer group’s belief." Would you do a Z test or T test? is known. True or False ?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 22SGR
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"A bus company advertised a mean time of 150 minutes for a trip between two cities. A consumer group had reason to believe that the mean time was more than 150 minutes. A sample of 40 trips showed a mean x̄= 153 minutes and a standard deviation s=7.5 minutes. At the .05 level of significance, test the consumer group’s belief."
Would you do a Z test or T test? is known. True or False ?
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