Question
Mon January 24, 2011 By: Jaspreet Singh

An instructor has a test bank consisting of 300 easy true/false questions, 200 difficult questions, 500 easy multiple choice questions and 400 difficult multiple choice questions. if a question is selected at random from the test bank, what is the probability that it will be an easy question given that it is multiple choice question.

Expert Reply
Thu January 27, 2011
Dear Student,
 
We know that
 
 
Therefore,
 
P(Question is Easy / Question is Multiple Choice)
= P(Question is Easy Multiple Choice)/P(Question is Multiple Choice)
 
=> P(Question is Easy / Question is Multiple Choice) =
 
 
Regards Topperlearning.
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