The amount of time required for a mechanic to replace a clutch is normally distributed with mean 90 minutes and standard deviation of 15 minutes. A car is taken to the mechanic to have its clutch replaced. (a) Find the probability that the car will be ready in two hours. (b) Find the probability that the car will not be ready after 80 minutes. (c) Find the probability that the car is ready in between 85 to 95 minutes.

The amount of time required for a mechanic to replace a clutch is normally distributed with mean 90 minutes and standard deviation of 15 minutes. A car is taken to the mechanic to have its clutch replaced. (a) Find the probability that the car will be ready in two hours. (b) Find the probability that the car will not be ready after 80 minutes. (c) Find the probability that the car is ready in between 85 to 95 minutes.

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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(a) Find the probability that the car will be ready in two hours.

(b) Find the probability that the car will not be ready after 80 minutes.

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