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.
Solution 31BSC
= 0.915