The length of life X, in days, of a heavily used electric motor has probability density function -3x X20 f(x) = {0, otherwise Find the probability that the motor has at least 1/2 of a day, given that it has lasted 1/4 of a day. Find the mean and the variance for X.
The length of life X, in days, of a heavily used electric motor has probability density function -3x X20 f(x) = {0, otherwise Find the probability that the motor has at least 1/2 of a day, given that it has lasted 1/4 of a day. Find the mean and the variance for X.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.1: Measures Of Center
Problem 9PPS
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