Daves Automatic Door, referred to in Exercise 37, installs automatic garage door openers. Based on a sample,
Question:
Based on a sample, following are the times, in minutes, required to install 10 door openers: 28, 32, 24, 46, 44, 40, 54, 38, 32, and 42.
a. Compute the sample variance.
b. Determine the sample standard deviation.
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Related Book For
Statistical Techniques in Business and Economics
ISBN: 978-0078020520
16th edition
Authors: Douglas Lind, William Marchal
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