A political campaign is interested in whether a geographic difference existed in support for raising the minimum wage in a certain state. Polls were conducted in the two largest cities in the state about raising the minimum wage. In city 1, a poll of 800 randomly selected voters found that 502 supported raising the minimum wage. In city 2, a poll of 1000 randomly selected voters found that 566 supported raising the minimum wage. What type of hypothesis test should be performed? Select P1 = Ex: 0.123: P2 = Ex: 0.123: p = = Ex: 0.123: Test statistic= Ex: 0.12: %3D p-value = Ex: 0.123: Does sufficient evidence exist to support the claim that the level of support differs between the two cities at the a = 0 0.1 significance level? Select

A political campaign is interested in whether a geographic difference existed in support for raising the minimum wage in a certain state. Polls were conducted in the two largest cities in the state about raising the minimum wage. In city 1, a poll of 800 randomly selected voters found that 502 supported raising the minimum wage. In city 2, a poll of 1000 randomly selected voters found that 566 supported raising the minimum wage. What type of hypothesis test should be performed? Select P1 = Ex: 0.123: P2 = Ex: 0.123: p = = Ex: 0.123: Test statistic= Ex: 0.12: %3D p-value = Ex: 0.123: Does sufficient evidence exist to support the claim that the level of support differs between the two cities at the a = 0 0.1 significance level? Select

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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In a particular year, 68% of online courses taught at a system of community colleges were taught by full-time faculty. To test if 68% also represents a particular state's percent for full-time faculty teaching the online classes, a particular community college from that state was randomly selected for comparison. In that same year, 35 of the 44 online courses at this particular community college were taught by full-time faculty. Conduct a hypothesis test at the 5% level to determine if 68% represents the state in question. Note: If you are using a Student's t-distribution for the problem, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.) Part 1) Construct a 95% confidence interval for the true proportion. Sketch the graph of the situation. Label the point estimate and the lower and upper bounds of the confidence interval. (Round your answers to four decimal places.)
A study considered the question, "Are you a registered voter?" Accuracy of response was confirmed by a check of city voting records. Two methods of survey were used: a face-to-face interview and a telephone interview. A random sample of 89 people were asked the voter registration question face to face. Of those sampled, seventy-six respondents gave accurate answers (as verified by city records). Another random sample of 90 people were asked the same question during a telephone interview. Of those sampled, eighty-three respondents gave accurate answers. Assume the samples are representative of the general population. At the 95% level, do you detect any difference in the proportion of accurate responses from face-to-face interviews compared with the proportion of accurate responses from telephone interviews(Show your 2-Prop z Int confidence in interval notation and show your interpretation) I:76, n2=90,X2= 83, CiL = 6.95 89 O.1602 < P, -P2<0. 0236 yd borminoo 76 0.8539 s 83=…
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A political campaign is interested in whether a geographic difference existed in support for raising the minimum wage in a certain state. Polls were conducted in the two largest cities in the state about raising the minimum wage. In city 1, a poll of 800 randomly selected voters found that 504 supported raising the minimum wage. In city 2, a poll of 1000 randomly selected voters found that 627 supported raising the minimum wage. What type of hypothesis test should be performed? ______ select (left-tailed z-test, two-tailed z-test, left-tailed t-test, right-tailed t-test) p^1= (Ex:0.123) p^2= (Ex: 0.123) p^= (Ex: 0.123) Test statistic = (Ex: .13) p-value = (Ex: 0.123) Does sufficient evidence exist to support the claim that the level of support differs between the two cities at the α=0.1 significance level?_____ select (no or yes)
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A study considered the question, "Are you a registered voter?" Accuracy of response was confirmed by a check of city voting records. Two methods of survey were used: a face-to-face interview and a telephone interview. A random sample of 89 people were asked the voter registration question face to face. Of those sampled, seventy-five respondents gave accurate answers (as verified by city records). Another random sample of 88 people were asked the same question during a telephone interview. Of those sampled, seventy-two respondents gave accurate answers. Assume the samples are representative of the general population. (a) Categorize the problem below according to parameter being estimated, proportion p, mean ?, difference of means ?1 – ?2, or difference of proportions p1 – p2. Then solve the problem. p p1 – p2 ? ?1 – ?2 (b) Let p1 be the population proportion of all people who answer the voter registration question accurately during a face-to-face interview. Let p2 be the…