Short Answer
Suppose you encounter two traffic lights on your commute to school. You estimate that the probability is .5 that the first light will be red when you get to it, .4 that the second light will be red, and .6 that at least one of the lights will be red.
-Calculate and interpret the expected value of the number of red lights that you encounter.
Correct Answer:
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The expected value is 
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Correct Answer:
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. If you...View Answer
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