Assume that random guesses are made for seven multiple choice questions on an SAT test, so that there are n=7 trials, each with probability of success (correct) given by p= 0.5. Find the indicated probability for the number of correct answers. Find the probability that the number x of correct answers is fewer than 4. P(X<4) =D (Round to four decimal places as needed.)

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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5.2.17-T
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Assume that random guesses are made for seven multiple choice questions on an SAT test, so that there are n= 7 trials, each with probability of success (correct) given by p= 0.5. Find the indicated probability for the
number of correct answers.
Find the probability that the number x of correct answers is fewer than 4.
P(X<4) =
(Round to four decimal places as needed.)
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Transcribed Image Text:5.2.17-T Question Help ▼ Assume that random guesses are made for seven multiple choice questions on an SAT test, so that there are n= 7 trials, each with probability of success (correct) given by p= 0.5. Find the indicated probability for the number of correct answers. Find the probability that the number x of correct answers is fewer than 4. P(X<4) = (Round to four decimal places as needed.) Enter your answer in the answer box and then click Check Answer. Clear All Check Answer All parts showing MacBook 888 DII DD F11 F12 esc. F5 F6 F7 F8 F9 F10 F3 F4 @ #3 $ & 1 3 7 8 delete { Q W E R. T tab A F G J K L caps lock C V N shift alt alt この * 00
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