Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 93 people in the 18-21 age bracket and finds that 79 of them respond and 14 refuse to respond. When 266 people in the 22-29 age bracket are contacted, 237 respond and 29 refuse to respond. Assume that 1 of the 359 people is randomly selected. Find the probability of getting someone in the 22-29 age bracket or someone who agreed to respond.Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol.P(22-29 or agreed) = [Input Box](Hint: It might be helpful to organize the data into a table first.)[Submit Question Button]

Given dataageRespondrefused to a respondtotal18-2179149322-2923729266total31643359

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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A university study involves a simple random sample of 26 students taken from a population of 12,550. Undergraduate students make up 73% of the university's students. Determine the probability of selecting only undergraduate students?
According to data on the sale of Vehicles in Barbados, it was calculated that men purchase 75% of vehicles in Babados. If 30 vehicle owners are selected randomly, find the probability that exactly 13 are men.
Organ Donors USA Today provided information about a survey of 5100 adult Internet users. Of the respondents, 2346 said they are willing to donate organs after death. In this survey conducted for Donate Life America, 100 adults were surveyed in each state and the District of Columbia, and results were weighted to account for the different state population sizes. a. What percentage of respondents said that they are willing to donate organs after death? b. Based on the poll results, what is the probability of randomly selecting an adult who is willing to donate organs after death? c. What term is used to describe the sampling method of randomly selecting 100 adults from each state and the District of Columbia?
13 percent of the patients in a study reported previous episodes of a stroke. Use 13 percent as the estimate of the prevalence of stroke within the population. If 70 subjects are chosen at random from the population, what is the probability that 10 percent of less would report an incidence of stroke?
23
Out of a sample of 10,000 men, the probability that a man picked at random weighs over 190 pounds is 0.25. The probability that a man weighs less than 135 pounds is 0.15. What is the probability that a man picked at random weighs either 190 pounds or under 135 pounds?
In a recent poll of voters, 20% were displeased with both candidates. If 3 people were picked at random. find the probability that at least one liked one of the candidates.
Suppose that 28% of people own dogs. If two people are randomly selected, what is the probability that they both own a dog?
The tickets in a box have an average value of 75, and the SD is 10. Twenty-five draws are made at random with replacement from this box. Find the chance that the average of the draws will be in the range 65 to 85.
About 2.5% of Canadians have blood type AB. If 25 Canadians are selected randomly, ving. The exact probability that less than 2 have blood type AB. The exact probability that 23 have blood type other than AB. The approximate probability that at least one has blood type AB.
Of the patients at a cardiac rehabilitation centre, 36% lead a sedentary lifestyle and have had a heart attack. If 78% of the patients lead a sedentary lifestyle, find the probability that a randomly selected patient has had a heart attack, given that he or she leads a sedentary lifestyle. Answer:

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