There are declining levels of cooperation among persons contacted in surveys and this bringsconcerns to pollsters. A pollster contacts 92 people in the 18-21 age bracket and finds that 78 ofthem respond and 14 refuse to respond. When 276 people in the 22-29 age bracket are contacted,259 respond and 17 refuse to respond. Assume that 1 of the 368 people is randomly selected. Findthe 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.prob =Question Help: M Mes

Total = 368 people Number of people in 22-29 age bracket = 276 Number of people who agree to respond…

Answered: There are declining levels of…

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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105, 82, 94.5, 72.5, 92, 91, 52, 86, 100, 96, 98, 109, 96, 36, 98, 95
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3. A jar contains black and white marbles. Two marbles are chosen without replacement. The probability of selecting a black marble and then a white marble is 0.34, and the probability of selecting a black marble on the first draw is 0.47. What is the probability of selecting a white marble on the second draw, given that the first marble drawn was black?
3. Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 73 people in the 18-21 age bracket and finds that 62 of them respond and 11 refuse to respond. When 303 people in the 22-29 age bracket are contacted, 273 respond and 30 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 responds.Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol.P(22-29 or responds) = %
When two births are randomly selected, the sample space for genders is bb, bg. gb, and gg. Assume that those four outcomes are equally likely. Construct a table that describes the sampling distribution of the sample proportion of girls from two births. Does the mean of the sample proportions equal the proportion of girls in two births? Does the result suggest that a sample proportion an unbiased estimator of a population proportion? For the entire population, assume the probability of having a boy is the probability of having a girl is , and this is not affected by how many boys or girls have previously been born. 2 Determine the probabilities of each sample proportion. Probability Sample proportion of girls Tune intanare or cimnlifiad frartinne
Assume that 800 births are randomly selected and 39 of the births are girls. Use subjective judgment to describe the number of girls as significantly high, significantly low, or neither significantly low nor significantly high.
19 people apply for a job as assistant manager of a restaurant. 10 have completed college and the rest have not. If the manager selects 11 applicants at random, find the probability that 6 are college graduates. What is the mean number of applicants who did not complete college? What is the variance for the applicants who did not complete college?
A survey showed that 76% of adults need correction (eyeglasses, contacts, surgery, etc.) for their eyesight. If 14 adults are randomly selected, find the probability that at least 13 of them need correction for their eyesight. Is 13 a significantly high number of adults requiring eyesight correction?
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.
Please explain...
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.
Fewer young people are driving. In 1995, 63.9% of people under 20 years old who were eligible had a driver's license. Bloomberg reported that percentage had dropped to 41.7% in 2016. Suppose these results are based on a random sample of 1,200 people under 20 years old who were eligible to have a driver's license in 1995 and again in 2016.

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