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Get Full Access to Elementary Statistics - 12 Edition - Chapter 5.3 - Problem 13bsc
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Get Full Access to Elementary Statistics - 12 Edition - Chapter 5.3 - Problem 13bsc

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# Guessing Answers The math portion of the ACT test consists

ISBN: 9780321836960 18

## Solution for problem 13BSC Chapter 5.3

Elementary Statistics | 12th Edition

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Problem 13BSC

Problem  13BSC

Guessing Answers The math portion of the ACT test consists of 60 multiple-choice questions, each with five possible answers (a, b, c, d, e), one of which is correct. Assume that you guess the answers to the first three questions.

a. Use the multiplication rule to find the probability that the first two guesses are wrong and the third is correct. That is, find P(WWC), where С denotes a correct answer and W denotes a wrong answer.

b. Beginning with WWC, make a complete list of the different possible arrangements of two wrong answers and one correct answer, then find the probability for each entry in the list.

c. Based on the preceding results, what is the probability of getting exactly one correct answer when three guesses are made?

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Solution  13BSC

=0.384

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