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
icon
Related questions
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 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.

Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Limits and Continuity
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.
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill