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# : Using the Binomial Probability Table. In Exercises, ISBN: 9780321836960 18

## Solution for problem 16BSC Chapter 5.3

Elementary Statistics | 12th Edition

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Problem 16BSC

16BSC: Using the Binomial Probability Table. In Exercises, assume that random guesses are made for five multiple-choice questions on an ACT test, so that there are n = 5 trials, each with probability of success (correct) given by p = 0.20. Use the Binomial Probability table (Table A-1) to find the indicated probability for the number of correct answers. Find the probability that the number x of correct answers is at least 3.

Step-by-Step Solution:

Solution 16BSC: The goal is to use the given table to find the probability that the nu ber x of correct answers is at least 3. Step 1 of 3: In this problem, we are told that random guesses are made for five multiple-choice questions on the ACT test. So, there are n = 5 trials, each with probability of success given by p = 0.20. The phrase “at least 3 correct answers” means that the number of correct answers is 3 or 4 or 5.

Step 2 of 3

Step 3 of 3

##### ISBN: 9780321836960

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: Using the Binomial Probability Table. In Exercises,