### stat 578 Assignment 2 Solutions

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Assignments2 solutions: Due by Midnight Sunday June 16th, 2013

(drop box of week 2) (Chapters 4, 5, and 6) Total 125 points.

True/False (2 points each)

Chapter 4

1. If events A and B are independent and A is not an impossible event, then P(A/B) is not equal to zero. TRUE In fact P(A/B) equals P(A) if A and B are independent, which is not zero unless A is an impossible event.

2. If events A and B are mutually exclusive, then P(A/B) is equal to This is obvious from the definition of mutually exclusive events. If B occurs then A cannot occur at the same time. Therefore P(A/B) 0.

3. The union of events A and B is given by all basic outcomes common to both A and B FALSE

Chapter 5

1. If the probability of success is 0.4 and the number of trials in a binomial distribution is...

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