A student is taking an exam with 10 true/false questions; the student is guessing on every question, with a 1/2 probability of getting each question right. To pass, the student needs to answer at least 7 out of 10 questions correctly. What is the expected number of correct answers, conditioned on the student passing?

A student is taking an exam with 10 true/false questions; the student is guessing on every question, with a 1/2 probability of getting each question right. To pass, the student needs to answer at least 7 out of 10 questions correctly. What is the expected number of correct answers, conditioned on the student passing?

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter8: Sequences, Series,and Probability

Section8.7: Probability

Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...

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