Question 799616: A student takes a 14-question,multiple-choice exam with two choices for each question and guesses on each question. Assume the variable is binomial. Round the Intermediate and final answers to three decimal places.
Find the Probability of guessing at least 10out of 14 correctly.
P(guessing at least 10 out of 14 correctly)=
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A student takes a 14-question,multiple-choice exam with two choices for each question and guesses on each question. Assume the variable is binomial. Round the Intermediate and final answers to three decimal places.
Find the Probability of guessing at least 10out of 14 correctly.
P(guessing at least 10 out of 14 correctly)=
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n = 14 ; p(correct) = 1/2
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P(10<= x <=14) = 1 - P(0<= x <=9) = 1 - binomcdf(14,1/2,9) = 0.0898
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Cheers,
Stan H.
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