Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 74 people in the 18-21 age bracket and finds that 63 of them respond and 11 refuse to respond. When 278 people in the 22-29 age bracket are contacted, 260 respond and 18 refuse to respond. Assume that 1 of the 352 people is randomly selected. Find the probability of getting someone in the 18-21 age bracket or someone who responds. Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol. P(18-21 or responds) = (Hint: It might be helpful to organize the data into a table first.)

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Pollsters are concerned about declining levels of cooperation among persons contacted
in surveys. A pollster contacts 74 people in the 18-21 age bracket and finds that 63 of
them respond and 11 refuse to respond. When 278 people in the 22-29 age bracket are
contacted, 260 respond and 18 refuse to respond. Assume that 1 of the 352 people is
randomly selected. Find the probability of getting someone in the 18-21 age bracket or
someone who responds.
Report the answer as a percent rounded to one decimal place accuracy. You need not
enter the "%" symbol.
P(18-21 or responds) =
(Hint: It might be helpful to organize the data into a table first.)
Transcribed Image Text:Question Details Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 74 people in the 18-21 age bracket and finds that 63 of them respond and 11 refuse to respond. When 278 people in the 22-29 age bracket are contacted, 260 respond and 18 refuse to respond. Assume that 1 of the 352 people is randomly selected. Find the probability of getting someone in the 18-21 age bracket or someone who responds. Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol. P(18-21 or responds) = (Hint: It might be helpful to organize the data into a table first.)
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