Wednesday, April 14, 2010

What is the probability that this student is also enrolled in statistics?

Let A be the event that a student is enrolled in an accounting course, and let S be the event that a student is enrolled in a statistics course. It is known that 30% of all students are enrolled in an accounting course and 40% of all students are enrolled in statistics. Included in these numbers are 15% who are enrolled in both statistics and accounting. A student is randomly selected, and it is found that the student is enrolled in accounting. What is the probability that this student is also enrolled in statistics?

What is the probability that this student is also enrolled in statistics?
answer: 50%





see diagram: (works best in a monospaced font)


-1-2-3-4-5-6-7-8-9-0 (each char represents 5%)


xxxxxx-------------- acct students (30%)


---xxxxxxxx--------- stat students (40%)


(15% overlap)
Reply:i dont know .......but all i know is you are helping me this semester with statistics
Reply:Need to know how many students? If not then way to complicated for me.
Reply:What is the probability of you putting this in the wrong group?





100%!





;)





You really ought to post these in the Homework Help section. They have nothing to do with homeschooling.
Reply:50%--half of all students in accounting (30%) are also in statistics (15%).

tooth and nail

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