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06 Oct 2005, 22:15
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An instructor has 300 easy true of false questions, 200 difficult true of false questions, 500 easy multiple choice questions, and 400 difficult multiple choice questions.
If a random question is picked, find
a) probability that its an easy question
b) probability that its an easy multiple choice question
c) probability that its an easy multiple choice question, given that its a multiple choice question.
Source: Business Statistics for Management and Economics, 7th Edition
If a random question is picked, find
a) probability that its an easy question
b) probability that its an easy multiple choice question
c) probability that its an easy multiple choice question, given that its a multiple choice question.
Source: Business Statistics for Management and Economics, 7th Edition
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06 Oct 2005, 22:23
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Total number of questions: 300 + 200 + 500 + 400 = 14,00
a) Total number of easy questions = 300 + 500 = 800
Probability = 800/1400 = 8/14 = 4/7
b) Total number of easy multiple choice question = 500
Proabbility = 500/1400 = 5/14
c) Total number of multiple choice questions = 900
Total number of easy multiple choice question = 500
Probability = 5/9
a) Total number of easy questions = 300 + 500 = 800
Probability = 800/1400 = 8/14 = 4/7
b) Total number of easy multiple choice question = 500
Proabbility = 500/1400 = 5/14
c) Total number of multiple choice questions = 900
Total number of easy multiple choice question = 500
Probability = 5/9
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Quantitative Questions Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
