Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 02 Nov 2017 My Price 8.00

Memphis monitors

3-37. A parking garage in Memphis monitors the time it takes customers to exit the parking structure from the time they get in their car until they are on the streets. A sample of 28 exits was recently taken and is shown here.

 

 

 

              Garage Exit (time in seconds)      

 

 

 

83               138               145               147

 

130                 79               156               156

 

90                 85                 68                 93

 

178                 76                 73               119

 

92               146                 88               103

 

116               134               162                 71

 

181               110               105                 74

 

 

 

a.  Calculate the range, interquartile range, variance, and standard deviation for these sample data.

 

b. If the minimum time and the maximum time in

 

the sample data are both increased by 10 seconds, would this affect the value for the interquartile range that you calculated in part a? Why or why not?

 

c.  Suppose the clock that electronically recorded the times was not working properly when the sample was taken and each of the sampled times needs to be increased by 10 seconds. How would adding

 

10 seconds to each of the sampled speed of service times change the sample variance of the data?

 

 


Answers

Maurice Tutor
(5)
Status NEW Posted 02 Nov 2017 07:11 PM My Price 8.00

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