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Get Full Access to Mathematical Statistics With Applications - 7 Edition - Chapter 2 - Problem 117e
Get Full Access to Mathematical Statistics With Applications - 7 Edition - Chapter 2 - Problem 117e

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# A state auto-inspection station has two inspection teams.

ISBN: 9780495110811 47

## Solution for problem 117E Chapter 2

Mathematical Statistics with Applications | 7th Edition

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Problem 117E

Problem 117E

A state auto-inspection station has two inspection teams. Team 1 is lenient and passes all automobiles of a recent vintage; team 2 rejects all autos on a first inspection because their “headlights are not properly adjusted.” Four unsuspecting drivers take their autos to the station for inspection on four different days and randomly select one of the two teams.

a If all four cars are new and in excellent condition, what is the probability that three of the four will be rejected?

b What is the probability that all four will pass?

Step-by-Step Solution:

Step 1 of 3:

Given that, a auto-inspection station has two inspection teams.

Here, probability of rejection and passing is equally likely and is

P(Rejection) =

P(Passing) =

Let's denote rejection = R

Passing = P

Step 2 of 3

Step 3 of 3

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