Assume that random guesses are made for eight multiple choice questions on an SAT​ test, so that there are n=8 ​trials, each with probability of success​ (correct) given by p=0.45. Find the indicated probability for the number of correct answers.   Find the probability that the number x of correct answers is fewer than 4.

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section9.3: Binomial Probability
Problem 2E: If a binomial experiment has probability p success, then the probability of failure is...
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Assume that random guesses are made for
eight
multiple choice questions on an SAT​ test, so that there are
n=8
​trials, each with probability of success​ (correct) given by
p=0.45.
Find the indicated probability for the number of correct answers.
 
Find the probability that the number x of correct answers is fewer than
4.
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