A multiple choice test contains 25 questions, each with 4 answers. Assume a student just guesses on each question. (aj What is the probability that the student answers more than 20questions correctly? (b) What is the probability that the student answers less than 5questions correctly?
A multiple choice test contains 25 questions, each with 4 answers. Assume a student just guesses on each question. (aj What is the probability that the student answers more than 20questions correctly? (b) What is the probability that the student answers less than 5questions 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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Answer must be in exact number, no tolerance
Transcribed Image Text:A multiple-choice test contains 25 questions, each with 4 answers. Assume a student just guesses on each question.
(a) What is the probability that the student answers more than 20questions correctly?
(b) What is the probability that the student answers less than 5iquestions correctly?
(a)
10A
Give the answer in scientific notation with nurmbers rounded
to the nearest integer (eg 3-10 14).
(b)
Round your answer to four decimal places (eg 98.7654).
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