A Statistics Professor Has Noted from Past Experience That a Student

question 52

Short Answer

A statistics professor has noted from past experience that a student who follows a program of studying two hours for each hour in class has a probability of 0.9 of getting a grade of C or better, while a student who does not follow a regular study program has a probability of 0.2 of getting a C or better. It is known that 70% of the students follow the study program. Find the probability that a student who has earned a C or better grade, followed the program.

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Definitions:

TSX

The Toronto Stock Exchange, one of the largest stock exchanges in the world, based in Canada.

DAX

A blue chip stock market index consisting of the 30 major German companies trading on the Frankfurt Stock Exchange.

FTSE

The Financial Times Stock Exchange (FTSE) is a series of indices that represent the performance of stocks listed on the London Stock Exchange.

Hang Seng

A market index that represents the performance of the largest companies listed on the Hong Kong Stock Exchange.