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?