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April 21, 2014

Homework Help: Statistics

Posted by Jake on Wednesday, October 10, 2012 at 12:49am.

A 50-question true-false exam is given. Each correct answer is worth 10 points. Consider an unprepared student who randomly guesses on each question. In your solution, please be sure to show the exact steps you used to arrive at the answers.

A. If 5 points are deducted for each incorrect answer, what is the chance that the student will score at least 200 points?
B. If 10 points are deducted for each wrong answer, what is the chance that the student will get a negative score on the exam?

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