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Get Full Access to Elementary Statistics - 12 Edition - Chapter 4.3 - Problem 31bsc
Get Full Access to Elementary Statistics - 12 Edition - Chapter 4.3 - Problem 31bsc

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# Survey Refusals. In Exercise, refer to the | Ch 4.3 - 31BSC

ISBN: 9780321836960 18

## Solution for problem 31BSC Chapter 4.3

Elementary Statistics | 12th Edition

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Problem 31BSC

Problem 31BSC

Survey Refusals. In Exercise, refer to the following table summarizing results from a study of people who refused to answer survey questions (based on data from“I Hear You Knocking but You Can’t Come In,” by Fitzgerald and Fuller, Sociological Methods and Research, Vol. 11, No. 1). In each case, assume that one of the subjects is randomly selected.

 Age 18–21 22–29 30–39 40–49 50–59 60 and over Responded 73 255 245 136 138 202 Refused 11 20 33 16 27 49

Survey Refusals A market researcher is interested in responses, especially from those between the ages of 22 and 39, because they are the people more likely to make purchases. Find the probability that a selected subject responds or is between the ages of 22 and 39.

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Solution  31BSC

= 0.915

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