Answered: Pollsters are concerned about declining…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 90 people in the 18-21 age bracket and finds that 76 of them respond and 14 refuse to respond. When 272 people in the 22-29 age bracket are contacted, 242 respond and 30 refuse to respond. Assume that 1 of the 362 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) = %

(Hint: It might be helpful to organize the data into a table first.)

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