Have you ever tried to get out of jury duty? About 25% of those called will find an excuse (work, poor health, etc.) to avoid jury duty. If 14 people are called for jury duty, a) what is the probability that less than 3 will find an excuse to avoid jury duty? b) What is the probability that exactly 4 will find an excuse to avoid jury duty? c) Find the expected number of those who will find an excuse to avoid jury duty. What is the standard deviation?

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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Have you ever tried to get out of jury duty? About 25% of those called will find an excuse (work, poor
health, etc.) to avoid jury duty. If 14 people are called for jury duty,
a) what is the probability that less than 3 will find an excuse to avoid jury duty?
b) What is the probability that exactly 4 will find an excuse to avoid jury duty?
c) Find the expected number of those who will find an excuse to avoid jury duty. What is the standard
deviation?
Transcribed Image Text:Have you ever tried to get out of jury duty? About 25% of those called will find an excuse (work, poor health, etc.) to avoid jury duty. If 14 people are called for jury duty, a) what is the probability that less than 3 will find an excuse to avoid jury duty? b) What is the probability that exactly 4 will find an excuse to avoid jury duty? c) Find the expected number of those who will find an excuse to avoid jury duty. What is the standard deviation?
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