Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. a pollster contacts 92 people in the 18-21 age bracket and finds that 78 of them respond and 14 refuse to respond. when 284 people in the 22-29 age bracket are contacted, 265 respond and 19 refuse to respond. assume that 1 of the 376 people is randomly selected. find the probability of getting someone in the 22-29 age bracket or someone who refused to respond.

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2 December, 19:55

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Moody · Answer 1

Probability = (total 22-29 age bracket + number of not respond and aged 18 - 21) / total people

= (284+14) / 376

= 0.792

= 0.79