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Stat225-Prob06

# Stat225-Prob06 - Stat 225 Problem Set 06 Fall 2008[Weiss...

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Stat 225 – Problem Set 06 Fall 2008 [ Weiss : 5.3–5.4.] Quiz #6 on Friday 10/17 will be similar in format and content to one of the problems below. You should be prepared to solve any of them. 1. For each random variable X below, give the distribution and the parameter(s). (a) X is the number of 5’s in ten rolls of a fair die. (b) A baseball starting lineup consists of nine players, three of which are outfield- ers. A random sample of three players is taken from a baseball starting lineup. Let X be the number of outfielders in the sample. (c) X is the number of Hearts in a five-card poker hand dealt from a standard 52-card deck. (d) A player wins a game if he/she rolls at least one 6 in four rolls of a fair die. Let X be the outcome (win or lose) of this game. (e) A lazy student who did not study will simply guess at each question on a multiple choice test. Let X be the number of correct guesses on a test with 25 questions and 5 answer choices per question. (f) 65% of customers at a particular diner order pie. Of the next 12 customers, let X be the number that order pie.

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