You are taking a 10 question
multiple choice test. If each question has four choices and
you guess on each question, what is the probability of getting
exactly
7
questions correct?
*n* = 10
*k* = 7
*n – k* = 3
*p* = 0.25 = probability of guessing the correct answer on
a question
*q* = 0.75 = probability of guessing the wrong answer on
a question |