Richard has been given an 11question multiplechoice quiz in

Richard has been given an 11-question multiple-choice quiz in his history class. Each question has five answers, of which only one is correct. Since Richard has not attended the class recently, he doesn\'t know any of the answers. What is considered the success?

Solution

There are 11 questions

Each question has 5 answers

Chance for right answer p = 0.2

n = 11

Hence X no of question which are right follow a binomial distribution with

choosing right answer by guess as success.

Prob for success p = 0.2

Prob for failure = 0.8

n = no of trials = 11