2. A student answers a multiple-choice question either by knowing the answer or by guessing. The probability that the student knows the answer is 40%. If the student guesses, he has 5 possi- ble choices in the multiple-choice question. What is the probability that the student answers the question correctly?
2. A student answers a multiple-choice question either by knowing the answer or by guessing. The probability that the student knows the answer is 40%. If the student guesses, he has 5 possi- ble choices in the multiple-choice question. What is the probability that the student answers the question correctly?
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section: Chapter Questions
Problem 14T: An unbalanced coin is weighted so that the probability of heads is 0.55. The coin is tossed ten...
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