a. Compute the mean of the number of cars returns for rectifications for defects during the warranty time. b. Calculate the variance of the number of cars returns for rectifications for defects during the warranty time.
a. Compute the mean of the number of cars returns for rectifications for defects during the warranty time. b. Calculate the variance of the number of cars returns for rectifications for defects during the warranty time.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Question
A car wholesaler estimates the quantity of new cars retailed that have been returned back a many number of times for the rectification of defects during the warranty. The results are given in the following table. Show complete working.
Number of cars returns back | 0 | 1 | 2 | 3 | 4 |
Probability | 0.25 | 0.34 | 0.22 | 0.07 | 0.03 |
a. Compute the
b. Calculate the variance of the number of cars returns for rectifications for defects during the warranty time.
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