Question
One of the major problems facing polling firms today is non-response. Shown below is a table indicating whether or not someone responded to a telephone
One of the major problems facing polling firms today is non-response. Shown below is a table indicating whether or not someone responded to a telephone survey displayed by the age of the individual. Use this table to answer the following questions.
| Responded Age | 18-29 | 30-49 | 50-69 | 70 and up | Total |
| Responded | 58 | 72 | 90 | 105 | 325 |
| Refused | 109 | 69 | 58 | 23 | 259 |
| Total | 167 | 141 | 148 | 128 | 584 |
(a) What is the probability that a randomly selected individual is 18-29 or refused?
(b) What is the probability that a randomly selected individual is 30-49 or responded?
(c) What is the probability that a randomly selected individual is over 70 and refused?
(d) What is the probability that a randomly selected individual is 50-69 given that they responded?
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Numerical Analysis
Authors: Richard L. Burden, J. Douglas Faires
9th edition
538733519, 978-1133169338, 1133169333, 978-0538733519
