# Warranties A transmission repair firm that wants to offer a lifetime warranty on its repairs has determined that the probability density function for transmission failure after repair is f ( t ) = 0.3 e − 0.3 t , where t is the number of months after repair. What is the probability that a transmission chosen at random will last 3 months or less? more than 3 months?

### Mathematical Applications for the ...

11th Edition
Ronald J. Harshbarger + 1 other
Publisher: Cengage Learning
ISBN: 9781305108042

Chapter
Section

### Mathematical Applications for the ...

11th Edition
Ronald J. Harshbarger + 1 other
Publisher: Cengage Learning
ISBN: 9781305108042
Chapter 13.7, Problem 46E
Textbook Problem
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## Warranties A transmission repair firm that wants to offer a lifetime warranty on its repairs has determined that the probability density function for transmission failure after repair is f ( t )   = 0.3 e − 0.3 t , where t is the number of months after repair. What is the probability that a transmission chosen at random will last 3 months or less? more than 3 months?

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