Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 79 people in the 18-21 age bracket and finds that 67 of them respond and 12 refuse to respond. When 263 people in the 22-29 age bracket are contacted, 240 respond and 23 refuse to respond. Assume that 1 of the 342 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) = %

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 46E: Assume that a survey of 282 people is taken to determine the opinions of doctors, teachers, and...
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Pollsters are concerned about declining
levels of cooperation among persons
contacted in surveys. A pollster contacts
79 people in the 18-21 age bracket and
finds that 67 of them respond and 12
refuse to respond. When 263 people in
the 22-29 age bracket are contacted, 240
respond and 23 refuse to respond.
Assume that 1 of the 342 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) =
%3D
%
Transcribed Image Text:Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 79 people in the 18-21 age bracket and finds that 67 of them respond and 12 refuse to respond. When 263 people in the 22-29 age bracket are contacted, 240 respond and 23 refuse to respond. Assume that 1 of the 342 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) = %3D %
A quick quiz consists of a true/false
question followed by a multiple-choice
question with 4 possible answers. If both
questions are answered with random
guesses, find the probability that both
responses are correct.
Report the answer as a percent rounded
to two decimal place accuracy. You need
not enter the "%" symbol.
Probability =
%
%3D
Transcribed Image Text:A quick quiz consists of a true/false question followed by a multiple-choice question with 4 possible answers. If both questions are answered with random guesses, find the probability that both responses are correct. Report the answer as a percent rounded to two decimal place accuracy. You need not enter the "%" symbol. Probability = % %3D
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