In the 2012 presidential election, exit polls from the critical state of Ohio provided the followingresults:ObamaRomneyNo college degree (60%)52%45%College graduate (40%)47%51%If a randomly selected respondent voted for Obama, what is the probability that the person hasa college degree?Let O and C denote the respondents for Obama and the respondents with college degrees,respectively.O a. None among the choicesO b. P(C) = 0.40O . P(O|C) = 0.47O d. P(CJO) = 0.376 Suppose that f(x) = 0.125x for 0 < x < 4Determine the mean and the variance of X.

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Answered: In the 2012 presidential election, exit…

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 survey involving 400 likely Democratic voters and 200 likely Republican voters asked the question: Do you support or oppose legislation that would require trigger locks on guns, to prevent misuse by children? The following results were obtained: Answer Democrats,% Republicans,% Support 90 66 Oppose 6 22 Don't know/refused 4 12 If a randomly chosen respondent in the survey answered "support," what is the probability that he or she is a likely Republican voter? (Round your answer to three decimal places.)
A survey of athletes at a high school is conducted, and the following facts are discovered: 46% of the athletes are football players, 52% are basketball players, and 31% of the athletes play both football and basketball. An athlete is chosen at random from the high school: what is the probability that they are either a football player or a basketball player? Enter your answer as a percentage. %
A survey of athletes at a high school is conducted, and the following facts are discovered: 64% of the athletes are football players, 25% are basketball players, and 6% of the athletes play both football and basketball. An athlete is chosen at random from the high school: what is the probability that they are either a football player or a basketball player? Enter your answer as a percentage. %
A survey of athletes at a high school is conducted, and the following facts are discovered: 50% of the athletes are football players, 47% are basketball players, and 40% of the athletes play both football and basketball. An athlete is chosen at random from the high school: what is the probability that they are either a football player or a basketball player?Enter your answer as a percentage. %
The table below shows the soft drinks preferences of people in three age groups. If one of the 255 subjects is randomly selected, find the probability that the person is over 40 and drinks cola. Cola Root beer Lemon-lime Under 21 yrs of age 40 25 20 Between 21 and 40 35 20 30 Over 40 yrs of age 20 30 35
In a survey of consumers aged 12 and older, respondents were asked how many cell phones were in use by the household. (No two respondents were from the same household.) Among the respondents, 211answered "none,"289 said "one," 373 said "two," 143 said "three," and 138 responded with four or more. A survey respondent is selected at random. Find the probability that his/her household has four or more cell phones in use. Is it unlikely for a household to have four or more cell phones in use? Consider an event to be unlikely if its probability is less than or equal to 0.05.
Data was collected and placed into the following table. Brown eyes Blue eyes male 10 13 female 14 15 if someone who participated in the study is randomly selected, find the following probabilities. ( please use fractions and not decimals). A. P(Male B. P( female and brown eyes) C. P(Male or brown eyes) D. P( Female l blue eyes) E. P( Brown eyes l male) show work please!
In an inspection of automobiles in a certain Country, 60% of all automobiles had emissions that did not meet EPA regulations. For a random sample of 10 automobiles, compute the following probabilities: a. All 10 automobiles failed the inspection. b. Exactly 6 of the 10 failed the inspection. c. Six or more failed the inspection. d. All 10 passed the inspection.
Suppose that 30 percent of an adult population have an infectious disease and 40 percent have achronic disease. Assume that having an infectious disease is independent from having a chronicdisease. For each of the questions below perform the calculation using appropriate statisticalnotation.a. What is the probability that a person selected at random will have both diseases?b. What is the probability of having the infectious disease for people with the chronic disease?c. What is the probability of having the infectious disease for people without the chronic disease?d. What is the probability of not having the infectious disease for people with the chronicdisease?
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