67. Work Commuting Methods. Public transportation and the automobile are two meth- ods an employee can use to get to work each day. Samples of times recorded for each method are shown. Times are in minutes. 37 33 25 29 32 41 34 32 29 31 33 32 34 30 31 32 35 33 Public Transportation: 28 29 Automobile: a. Compute the sample mean time to get to work for each method. b. Compute the sample standard deviation for each method. c. On the basis of your results from parts (a) and (b), which method of transportation should be preferred? Explain.
67. Work Commuting Methods. Public transportation and the automobile are two meth- ods an employee can use to get to work each day. Samples of times recorded for each method are shown. Times are in minutes. 37 33 25 29 32 41 34 32 29 31 33 32 34 30 31 32 35 33 Public Transportation: 28 29 Automobile: a. Compute the sample mean time to get to work for each method. b. Compute the sample standard deviation for each method. c. On the basis of your results from parts (a) and (b), which method of transportation should be preferred? Explain.
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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need solution for 67
Transcribed Image Text:Chapter 3 Descriptive Statistics: Numerical Measures
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a. What is the mean number of minutes spent interacting with others for this sample?
How does it compare to the mean reported in the study?
b. What is the standard deviation for this sample?
c. Are there any outliers in this sample?
67. Work Commuting Methods. Public transportation and the automobile are two meth-
ods an employee can use to get to work each day. Samples of times recorded for each
method are shown. Times are in minutes.
Public Transportation: 28 29 32 37 33 25 29
Automobile:
29 31 33 32 34 30 31
32 41 34
32 35 33
a. Compute the sample mean time to get to work for each method.
b. Compute the sample standard deviation for each method.
c. On the basis of your results from parts (a) and (b), which method of transportation
should be preferred? Explain.
d. Develop a boxplot for each method. Does a comparison of the boxplots support
your conclusion in part (c)?
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