F(x) = { 25 0,x≤0 ,0 5
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter2: Functions And Graphs
Section2.CT: Chapter Test
Problem 5CT: Find the difference quotient. f(x)=x2x+5
Related questions
Question
A random variable X representing the duration in minutes of calls made at a telephone exchange has a distribution
a) Calculate the
b) Calculate the probability that a call last less than three minutes.
c) Calculate the density function of the variable
d) Calculate the expected duration of a call
e) Calculate the probability that a call lasts less than 4 minutes knowing that it has lasted more than three minutes.
than three
Transcribed Image Text:F(x) = {
25
0,x≤0
,0<x≤5
1,x> 5
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