For an audience of 600 people attending a concert, the average time on the journey to the
Question:
a. What is the probability that the sample mean journey time was more than 31 minutes?
b. What is the probability that the sample mean journey time was less than 33 minutes?
c. Construct a graph to illustrate why the answers to parts (a) and (b) are the same.
d. What is the probability that the sample mean journey time was not between 31 and 33 minutes?
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7077 a P Z P Z 141 9207 b P Z P Z 141 9207 c Normal ...View the full answer
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Related Book For 
Statistics For Business And Economics
ISBN: 9780132745659
8th Edition
Authors: Paul Newbold, William Carlson, Betty Thorne
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