7.25 Let x be the amount of time (in minutes) that a particular San Francisco commuter must...

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7.25 Let x be the amount of time (in minutes) that a particular San Francisco commuter must wait for a BART train. Suppose that the density curve is as pictured

(a uniform distribution):

image text in transcribed

a. What is the probability that x is less than 10 minutes?
more than 15 minutes?

b. What is the probability that x is between 7 and 12 minutes?

c. Find the value c for which P(x ,

c) .9.

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Introduction To Statistics And Data Analysis

ISBN: 9780840054906

4th Edition

Authors: Roxy Peck, Chris Olsen, Jay L. Devore

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