j) What is the probability that X is within 1 standard deviation of its expected value?  k) What is the probability that X = .6?

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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j) What is the probability that X is within 1 standard deviation of its expected value

k) What is the probability that X = .6? 

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