Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition

Published by McGraw-Hill Education
ISBN 10: 0078136334
ISBN 13: 978-0-07813-633-7

Chapter 4 - Probability and Counting Rules - 4-2 The Addition Rules for Probability - Exercises 4-2 - Page 207: 13

Answer

a. $0.058$ b. $0.942$ c. $0.335$

Work Step by Step

The total number is 17230 a. A female student aged 25–34 years P(female student aged 25–34)=$995/17230=0.058$ b. Male or aged 18–24 years P(male)=$10456/17230=0.607$, P(aged 18–24)=$13701/17230=0.795$, P(Male and aged 18–24)=$7922/17230=0.460$ P(Male or aged 18–24)=$0.607+0.795-0.460=0.942$ c. Under 25 years of age and not male P(Under 25 years of age and not male)=P(female under 25 years)=$5779/17230=0.335$
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