A multiple-choice test contains 25 questions, each with four choices. Assume a student just guesses on each question. Determine the probability: a. that the student answers more than 20 questions correctly? Ans = Blank 1 b. that the student answers less than five questions correctly? Ans = Blank 2

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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A multiple-choice test contains 25 questions, each with four choices. Assume a student just guesses on each question.
Determine the probability:
a. that the student answers more than 20 questions correctly? Ans = Blank 1
b. that the student answers less than five questions correctly? Ans = Blank 2
Transcribed Image Text:A multiple-choice test contains 25 questions, each with four choices. Assume a student just guesses on each question. Determine the probability: a. that the student answers more than 20 questions correctly? Ans = Blank 1 b. that the student answers less than five questions correctly? Ans = Blank 2
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