A multiple choice test contains 40 questions, each with four answers. Assume a student just guesses on each question. What is the probability that the student answers more than 9 questions correctly ?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Ex 9:
A multiple choice test contains 40 questions,
each with four answers. Assume a student
just guesses on each question. What is the
probability that the student answers more than 9
questions correctly?
Transcribed Image Text:Ex 9: A multiple choice test contains 40 questions, each with four answers. Assume a student just guesses on each question. What is the probability that the student answers more than 9 questions correctly?
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