Statistics for the Life Sciences (5th Edition)

Published by Pearson
ISBN 10: 0-32198-958-9
ISBN 13: 978-0-32198-958-1

Chapter 3 - Probability and the Binomial Distribution - Exercises 3.3.1 - 3.3.5: 3.3.2

Answer

Probability of an Event: P(event) = number of outcomes in event / total number of outcomes

Work Step by Step

a.) P(low income and smokes) = 634/ 6,549 = 0.0968 b.) P(not low income) = 1 - (2,480 / 6,549) = 0.621 c.) P(medium income) = 1,954 / 6,549 = 0.2984 d.) P(medium or low income) = (2,480 / 6,549) + (1,954 / 6,549) = 0.677
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