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- 5to 6 paragraphCovid 19 essay about hownsssjsjsjsbsbsbsbsbsbA research center claims that that 31% of adults in a certain country would travel into space on a commercial flight if they could afford it. In a random sample of 1200 adults in that country, 33% say that would travel into space on a commercial flight if they could afford it. At alpa= 0.05, isthere enough evidence to reject the research centers claim complete parts a through d belowSuppose, as a rough estimate, we say that there are 20 distinct geons used for object recognition; and a pair of geons can be placed in 10 distinct qualitative relations (geon A on top of geon; geon A to upper left of geon B; geon A to the left of geon B; and so forth). Now, suppose we add a third geon, geon C. Again, each geon comes in 20 varieties and 5 sizes. we'll start by creating a two-geon pair of A and B; then, we decide which of A or B the third geon (C) will be adjacent to, and then we place geon C beside either A or B in one of the 10 allowed relatios. how many distinct three-geon objects do we have in this space? R = ?
- In rolling a fair die once, what is theprobability of rolling a 2 or an oddnumber? show solutionit is not a graded quesitonIn 1975, the automobile industry determined t hat 40% of American carowners drove large cars, 20% drove intermediate-sized cars, and 40% drove small cars. A second survey in 1985 showed that 70% of the large-car owners in 1975 still owned large cars in 19 5, but 30% had changed to an intermediate-sized car. Of those who owned intermediate-sizedcars in 1975, 10% had switched to large cars, 70% cont inued to driveintermediate-sized cars, and 20% had changed to small cars in 19 5.Finally, of the small-car owners in 1975, 10% owned intermediate-sizedcars and 90% owned small cars in 19 5. Assuming that these trendscontinue, determine the percentages of Americans who own cars of eachsize in 1995 and the corresponding eventual percentages.
- What is the five-number summary for {12.5, 11.2, 10.9, 13.6, 19.9, 9.2, 2.7}? Minimum Value = 2.7Q1 = 10.9Median = 13.6Q3 = 9.2Maximum Value = 19.9 Minimum Value = 12.5Q1 = 11.2Median = 13.6Q3 = 9.2Maximum Value = 2.7 Minimum Value = 9.2Q1 = 13.6Median = 9.2Q3 = 19.9Maximum Value = 13.6 Minimum Value = 2.7Q1 = 9.2Median = 11.2Q3 = 13.6Maximum Value = 19.9Suppose that we want to estimate the true rate r of covid-positive people in a popu- lation (where they are reluctant to disclose their status). We use the two-coin-toss method, and those who toss two heads will lie about their status, reporting the opposite status. After flipping their coins, 36% of the people report that they are covid-positive. What is our estimate for the rate r of covid-positive people in this population?1. We poll 450 people and find that 30% favor Candidate S. In order to estimate with 90% confidence what percent of ALL voters would vote for Candidate S, we should use: 2-SampTInt 2-SampZInt 2-PropZInt TInterval 1-PropZInt ZInterval 2. We poll 550 people and find that 50% favor Candidate S. In order to estimate with 99% confidence the percent of ALL voters would vote for Candidate S, we should use: 2-PropZInt TInterval 2-SampZInt 2-SampTInt 1-PropZInt ZInterval
- An instructor has given a short quiz consisting of nvo parts. For a randomly selected student, let X= the number of points earned on the first part and Y= the number of points earned on the second part. Suppose that thejoint pmf of X and Yis given in the accompanying table. a. If the score recorded in the grade book is the total number of points earned on the nvo parts,what isthe expected recorded score E(X + Y)? b. If the maximum of the two scores is recorded,what isthe expected recorded score? A random variable is normally distributed with a mean of m =50 and a standard deviation of <T =5. Sketch a normal curve for the probability density Label the horizontal ax. is with values of 35, 40, 45, 50, 55, 60, and 65. Figure 6.4 shows that the normal curve almost touches the horizontal axis at three standard deviations below and at three standard deviations above the mean (in this case at 35 and 65). What is the probability…In is required to seat five men and four women in a row so that the women occupy the even places. How many such arrangements are possible?Many everyday decisions, like who will drive to lunch or who will pay for the coffee, are made by the toss of a (presumably fair) coin and using the centerion "heads, you will; tails, I will." This criterion is not quite fair, however, if the coin is biased (perhaps due to sightly irregulary construction or wear). John von Neumann suggested a way to make perfectly fair decisions, evevn with a possibly biased coin. If a coin, biased so that P(h)=0.5400 and P(1)=0.4600, is tossed twice, find the probability P(th)