Statistics: Informed Decisions Using Data (4th Edition)

Published by Pearson
ISBN 10: 0321757270
ISBN 13: 978-0-32175-727-2

Chapter 6 - Section 6.2 - Assess Your Understanding - Vocabulary and Skill Building - Page 344: 32a

Answer

See the picture.

Work Step by Step

$P(x)={}_nC_{x}~p^x~(1-p)^{n-x}$ n = 10, p = 0.2 and 1 - p = 0.8 $P(0)={}_{10}C_{0}\times0.2^0\times0.8^{10}=\frac{10!}{0!\times10!}\times1\times0.8^{10}=1\times1\times0.8^{10}=0.1074$ $P(1)={}_{10}C_{1}\times0.2^1\times0.8^9=\frac{10!}{1!\times9!}\times0.2\times\times0.8^9=10\times0.2\times0.8^9=0.2684$ $P(2)={}_{10}C_{2}\times0.2^2\times0.8^8=\frac{10!}{2!\times8!}\times0.2^2\times0.8^8=45\times0.2^2\times0.8^8=0.3020$ $P(3)={}_{10}C_{3}\times0.2^3\times0.8^7=\frac{10!}{3!\times7!}\times0.2^3\times0.8^7=120\times0.2^3\times0.8^7=0.2013$ $P(4)={}_{10}C_{4}\times0.2^4\times0.8^6=\frac{10!}{4!\times6!}\times0.2^4\times0.8^6=210\times0.2^4\times0.8^6=0.08808$ $P(5)={}_{10}C_{5}\times0.2^5\times0.8^5=\frac{10!}{5!\times5!}\times0.2^5\times0.8^5=252\times0.2^5\times0.8^5=0.02642$ $P(6)={}_{10}C_{6}\times0.2^6\times0.8^4=\frac{10!}{6!\times4!}\times0.2^6\times0.8^4=210\times0.2^6\times0.8^4=0.005505$ $P(7)={}_{10}C_{7}\times0.2^7\times0.8^3=\frac{10!}{7!\times3!}\times0.2^7\times0.8^3=120\times0.2^7\times0.8^3=0.0007864$ $P(8)={}_{10}C_{8}\times0.2^8\times0.8^2=\frac{10!}{8!\times2!}\times0.2^8\times0.8^2=45\times0.2^8\times0.8^2=0.00007373$ $P(9)={}_{10}C_{9}\times0.2^9\times0.8^1=\frac{10!}{9!\times1!}\times0.2^9\times0.8^1=10\times0.2^9\times0.8^1=0.000004096$ $P(10)={}_{10}C_{10}\times0.2^{10}\times0.8^0=\frac{10!}{10!\times0!}\times0.2^{10}\times1=1\times0.2^{10}=0.0000001024$
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