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April 19, 2015

Homework Help: statistic

Posted by Nickie on Sunday, January 27, 2013 at 2:10am.

A multiple-choice test has 48 questions, each with four
response choices. If a student is simply guessing at the
answers,
a. What is the probability of guessing correctly for
any question?
b. On average, how many questions would a student
get correct for the entire test?
c. What is the probability that a student would get
more than 15 answers correct simply by guessing?
d. What is the probability that a student would get 15
or more answers correct simply by guessing?

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