A commuter must pass through five traffic lights on her way to work and will have to

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A commuter must pass through five traffic lights on her way to work and will have to stop at each one that is red. She estimates the probability model for the number of red lights she hits, as shown below.

a) How many red lights should she expect to hit each day?
b) What's the standard deviation?

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Stats Data and Models

ISBN: 978-0321986498

4th edition

Authors: Richard D. De Veaux, Paul D. Velleman, David E. Bock

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Question Posted: Jan 20, 2016 05:56 AM

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A commuter must pass through five traffic lights on her way to work and will have to

Question:

x=#of red 0 1 2 3 P(X x) 0050.25 0.35 0.15 0.15 0.05

Step by Step Answer:

a ERed lights 0005 1025 2035 3015 4015 5005 22...View the full answer

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