Mathematics, 23.10.2019 18:50 mohd591
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 269 people in the 22-29 age bracket are contacted, 250 respond and 19 refuse to respond. assume that 1 of the 347 people is randomly selected. find the probability of getting someone in the 18-21 age bracket or someone who agreed to respond.
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Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. a...
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