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.

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.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 13PPS

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