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 279 people in the 22-29 age bracket are contacted, 248 respond and 31 refuse to respond. Assume that 1 of the 357 people is randomly selected. Find the probability of getting someone in the 22-29 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(22-29 or responds) = %

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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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
279 people in the 22-29 age bracket are contacted, 248 respond and 31 refuse to respond. Assume that 1 of
the 357 people is randomly selected. Find the probability of getting someone in the 22-29 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(22-29 or responds) =
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 279 people in the 22-29 age bracket are contacted, 248 respond and 31 refuse to respond. Assume that 1 of the 357 people is randomly selected. Find the probability of getting someone in the 22-29 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(22-29 or responds) =
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