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The branch manager for Bank A in Universiti Sains Malaysia has worked with her employees in effort to reduce the waiting time for customers at the bank. Recently, she and her team concluded that average waiting time is now down to 3.5 minutes with standard deviation equal to 1.0 minute. However, before making a statement at a senior managers' meeting, this branch manager wanted to double check that the process was working as thought. To make this check, she randomly sampled 25 customers and recorded the time they had to wait. She discovered that mean wait time for this sample of customers was 4.2 minutes. Based on the branch manager team's claims about waiting time, prepare a managerial report that addresses the following issue. 1.b. Calculate the probability that a sample mean for n=25 people would be as large or larger than 4.2 minutes.

The branch manager for Bank A in Universiti Sains Malaysia has worked with her employees in effort to reduce the waiting time for customers at the bank. Recently, she and her team concluded that average waiting time is now down to 3.5 minutes with standard deviation equal to 1.0 minute. However, before making a statement at a senior managers' meeting, this branch manager wanted to double check that the process was working as thought. To make this check, she randomly sampled 25 customers and recorded the time they had to wait. She discovered that mean wait time for this sample of customers was 4.2 minutes. Based on the branch manager team's claims about waiting time, prepare a managerial report that addresses the following issue. 1.b. Calculate the probability that a sample mean for n=25 people would be as large or larger than 4.2 minutes.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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The branch manager for Bank A in Universiti Sains Malaysia has worked with her employees in effort to reduce the waiting time for customers at the bank. Recently, she and her team concluded that average waiting time is now down to 3.5 minutes with standard deviation equal to 1.0 minute. However, before making a statement at a senior managers' meeting, this branch manager wanted to double check that the process was working as thought. To make this check, she randomly sampled 25 customers and recorded the time they had to wait. She discovered that mean wait time for this sample of customers was 4.2 minutes. Based on the branch manager team's claims about waiting time, prepare a managerial report that addresses the following issue. 1.b. Calculate the probability that a sample mean for n=25 people would be as large or larger than 4.2 minutes.
Transcribed Image Text:The branch manager for Bank A in Universiti Sains Malaysia has worked with her employees in effort to reduce the waiting time for customers at the bank. Recently, she and her team concluded that average waiting time is now down to 3.5 minutes with standard deviation equal to 1.0 minute. However, before making a statement at a senior managers' meeting, this branch manager wanted to double check that the process was working as thought. To make this check, she randomly sampled 25 customers and recorded the time they had to wait. She discovered that mean wait time for this sample of customers was 4.2 minutes. Based on the branch manager team's claims about waiting time, prepare a managerial report that addresses the following issue. 1.b. Calculate the probability that a sample mean for n=25 people would be as large or larger than 4.2 minutes.
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