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April 18, 2014

Homework Help: psychology statistics for behavioral sciences

Posted by gina on Wednesday, March 20, 2013 at 7:01pm.

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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