Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 78 people in the 18-21 age bracket and finds that 66 of them respond and 12 refuse to respond. When 282 people in the 22-29 age bracket are contacted, 252 respond and 30 refuse to respond. Assume that 1 of the 360 people is randomly selected. Find the probability of getting someone in the 22-29 age bracket or someone who refused to respond. Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol. P(22-29 or refused) = 96 (Hint: It might be helpful to organize the data into a table first.)
Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 78 people in the 18-21 age bracket and finds that 66 of them respond and 12 refuse to respond. When 282 people in the 22-29 age bracket are contacted, 252 respond and 30 refuse to respond. Assume that 1 of the 360 people is randomly selected. Find the probability of getting someone in the 22-29 age bracket or someone who refused to respond. Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol. P(22-29 or refused) = 96 (Hint: It might be helpful to organize the data into a table first.)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A
pollster contacts 78 people in the 18-21 age bracket and finds that 66 of them respond and 12 refuse to
respond. When 282 people in the 22-29 age bracket are contacted, 252 respond and 30 refuse to respond.
Assume that 1 of the 360 people is randomly selected. Find the probability of getting someone in the 22-29
age bracket or someone who refused to respond.
Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol.
P(22-29 or refused) =
96
(Hint: It might be helpful to organize the data into a table first.)
Expert Solution
Step 1
From the given information we make the following table to compute
| Yes | No | Total | |
| 18-21 | 66 | 12 | 78 |
| 22-29 | 252 | 30 | 282 |
| Total | 318 | 42 | 360 |
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