Finite Math and Applied Calculus (6th Edition)

Published by Brooks Cole
ISBN 10: 1133607705
ISBN 13: 978-1-13360-770-0

Chapter 8 - Section 8.2 - Bernoulli Trials and Binomial Random Variables - Exercises - Page 559: 6

Answer

$P(X=0)=C(5,0)*0.1^0*0.9^5=\frac{5!}{0!\times(5-0)!}\times0.1^0\times0.9^5=0.59049$ The probability is $0.59049$

Work Step by Step

The solution is based on the binomial distribution: $P(X=x)=C(n,x)*p^{x}*q^{n-x}$ All failures means no successes If we perform 5 independent Bernoulli trials, and $p=0.1$, the probability of zero successes are: $C(5,0)*0.1^0*0.9^5$. As there are 5 trial out of which none is a success. And the probability of a success is 0.1. $P(X=0)=C(5,0)*0.1^0*0.9^5=\frac{5!}{0!\times(5-0)!}\times0.1^0\times0.9^5=0.59049$
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