Problem 18BSC

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 fewer than 3.

Solution 18BSC

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