call for an office computer follows an exponential distribution at a rate of 0.02 per month. What is the probability that the time until the next call: a. exceeds 60 months? b. is less than 20 months?

call for an office computer follows an exponential distribution at a rate of 0.02 per month. What is the probability that the time until the next call: a. exceeds 60 months? b. is less than 20 months?

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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Question

The time in months between the service call for an office computer follows an exponential
distribution at a rate of 0.02 per month. What is the probability that the time until the next call:
a. exceeds 60 months?
b. is less than 20 months?

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