SOLUTION: A student is successful 73% of the time when making random guesses on a multiple choice exam. For an exam that contains 50 questions, find the mean number of questions answered cor

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Question 445387: A student is successful 73% of the time when making random guesses on a multiple choice exam. For an exam that contains 50 questions, find the mean number of questions answered correctly.
A) 31.791 B).39.639 C). 36.5 D). 38.854
Answer by ewatrrr(24785) About Me  (Show Source):
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Hi

A student is successful 73% of the time when making random guesses on a multiple choice exam.

For an exam that contains 50 questions...

find the mean number of questions answered correctly.



   mean = np = 50*.73 = 36.5