a) P(X > 20) b) P(20 < X < 30) c) For what value of x is P(X < x) = 0.30 %3D

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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1. The time X in seconds that it takes a certain online computer terminal (the
elapsed time between the end user's inquiry and the beginning of system's
response to that inquiry) has an exponential distribution with expected time 20
seconds. Compute :
a) Ρ(X 20)
b) P(20 < X < 30)
c) For what value of x is P(X < x) = 0.30
Transcribed Image Text:1. The time X in seconds that it takes a certain online computer terminal (the elapsed time between the end user's inquiry and the beginning of system's response to that inquiry) has an exponential distribution with expected time 20 seconds. Compute : a) Ρ(X 20) b) P(20 < X < 30) c) For what value of x is P(X < x) = 0.30
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