The article “A Thin-Film Oxygen Uptake Test forthe Evaluation of Automotive CrankcaseLubricants” (Lubric. Engr., 1984: 75–83) reportedthe following data on oxidation-induction time (min)for various commercial oils:87 103 130 160 180 195 132 145 211 105 145153 152 138 87 99 93 119 129a. Calculate the sample variance and standarddeviation.b. If the observations were reexpressed in hours, whatwould be the resulting values of the sample varianceand sample standard deviation? Answer withoutactually performing the reexpression.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question

The article “A Thin-Film Oxygen Uptake Test for
the Evaluation of Automotive Crankcase
Lubricants” (Lubric. Engr., 1984: 75–83) reported
the following data on oxidation-induction time (min)
for various commercial oils:
87 103 130 160 180 195 132 145 211 105 145
153 152 138 87 99 93 119 129
a. Calculate the sample variance and standard
deviation.
b. If the observations were reexpressed in hours, what
would be the resulting values of the sample variance
and sample standard deviation? Answer without
actually performing the reexpression.

Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 3 images

Blurred answer
Knowledge Booster
Hypothesis Tests and Confidence Intervals for Equality of Variances
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman