Introductory Statistics 9th Edition

Published by Wiley
ISBN 10: 1-11905-571-7
ISBN 13: 978-1-11905-571-6

Chapter 4 - Self-Review Test - Page 173: 20

Answer

a. i. P(Yes) = $\frac{77+104}{506}$ =0.3577 ii.P(Yes|Woman) = $\frac{104}{104+119+34}$=0.4047 iii.P(Woman and NO) = $\frac{119}{506}$ = 0.2352 iv. P(No response or man) =$\frac{140+119}{506}$+$\frac{77+32+140}{506}$ - $\frac{140}{506}$ =0.7273 b. P(Yes) = 0.3577 P(Yes|Woman) = 0.4047 P(Yes|Woman) $\ne$ P(Yes) Yes and Woman are not independent. P(Yes and Woman) = $\frac{104}{506}$ = 0.2055 P(Yes and Woman) $\ne $ 0 , therefore they are not mutually exclusive.

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