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Math Study Guide

# Math Study Guide - f How many possible ways are there to...

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Study Guide for Exam 2 1. You are at a party and accidently knock over the host's CD collection. There are 13 CDs and you quickly place them back on the shelf. a) How many possible ways are there to arrange these CDs? b) How many possible ways are there to have placed the first 5 in the correct order? c) What is the probability that you placed the first 5 in the correct order? d) How many possible ways are there to have placed the last 3 in the correct order? e) How many possible ways are there to have placed the first 5 and the last 3 in the correct order? f) What is the probability that you placed the first 5 or the last 3 in the correct order? 2. You are rolling a 12-sided die. a) How many possible rolls are there? b) How many possible ways are there to roll an even number? c) What is the probability that you roll an even number? d) How many possible ways are there to roll a multiple of 3? e) What is the probability that you roll a multiple of 3?

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Unformatted text preview: f) How many possible ways are there to roll an even number and a multiple of 3? g) What is the probability that you roll an even number and a multiple of 3? h) What is the probability that you roll a multiple of 3 given the roll is even? i) What is the probability that you do not roll an even number or you do not roll a multiple of 3? 3. You are playing a freethrow game at Amy's Casino Fantastico. You pay \$2 to play the game. You get to shoot the ball 3 times. You are a decent freethrow shooter and you know that you are equally likely to makeor miss a freethrow. If you make a freethrow you get \$1 and if you do not make it you get \$0. a) What is the expected value if this game? b) Is this a fair game? If you need more practice, I would recommend going to page 266 and doing all the odd problems of the review (don't bother with any card problems), this ways you can check your answers with the back of the book....
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Math Study Guide - f How many possible ways are there to...

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