(c) What is the probability that none of the five have written an editorial letter while under the influence of alcohol?(Round to four decimal places as needed.) Among 18- to 23-year-olds, 32% say they have written an editorial letter while under the influence of alcohol. Suppose five 18- to 23-year-olds are selected at random. Complete parts (a)through (d) below.

Answered: (c) What is the probability that none…

(c) What is the probability that none of the five have written an editorial letter while under the influence of alcohol? (Round to four decimal places as needed.)

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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(c) What is the probability that none of the five have written an editorial letter while under the influence of alcohol?
(Round to four decimal places as needed.)

Among 18- to 23-year-olds, 32% say they have written an editorial letter while under the influence of alcohol. Suppose five 18- to 23-year-olds are selected at random. Complete parts (a)
through (d) below.

Expert Solution

Step 1

Given that

n=5 , p=32%=0.32 , q=1-p=2-0.32=0.68

X~Binomial(n=5,p=0.32)

X=Number of written an editorial letter while under the influence of alcohol.

Probability mass function of X is

P(X=x)=⁵C_x0.32^x0.68^5-x , x=0,1,__,5

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