Pacific (APAC) Fraud Survey. Interviews were conductedwith a sample 1,508 employees of large APAC companies.One question concerned whether or not the employee'scompany had implemented a "whistle-blower" hotline-that is, a phone number that an employee can call to reportfraud or other types of misconduct without fear of retribu-tion. The 2015 survey found that 680 of the 1,508 respon-dents' companies had not implemented a whistle-blowerhotline. In comparison, 436 of the 681 respondents in the2013 survey reported their companies had not imple-mented a whistle-blower hotline.a. Test Ho: p = .5 against H₂: p < .5 using data from the2015 survey and a = .05. Give a practical interpreta-tion of the results.b. Test Ho: p = .5 against Ha: p > .5 using data from the2013 survey and a = .05. Give a practical interpreta-tion of the results.

a. In the 2015 survey:Calculated test statistic Zc = -3.81, leading to a p-value of 0.00007.As the…

Answered: Pacific (APAC) Fraud Survey. Interviews…

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 TA in statistics thinks that the format of the conferences and the timing of the assignments may affect students' assignment marks (out of 10). He decided to design three conferences with a different format: (1) with lecturing, (2) with demonstrating problems, and (3) with involving students in active problem-solving. Twelve students attended one of the conferences (four in each format) and asked to submit their assignments at week 3. Another twelve students attended one of the conferences but asked to submit their assignments at week 5. The data are tabled below: Assignment Week 3 Week 5 Lecture 6,7,5,7 5,5,4,5 Format Demo problems 7,8,8,9 6,7,7,6 Active problems 9,10,10,10 8,9,9,10 Note: ΣΣΣx=1385 Perform the ANOVA test and table the results, stating all critical values. State and explain what should be the follow-up analysis after the overall F-test if any (NO calculation but just explain).
28) A study published in the American Journal of Public Health was conducted to determine whether the use of seat belts in motor vehicles depends on ethnic status in San Diego County. A sample of 792 children treated for injuries sustained from motor vehicle accidents was obtained, and each child was classified according to (1) ethnic status (Hispanic or non-Hispanic) and (2) seat belt usage (worn or not worn) during the accident. The number of children in each category is given in the table below. Seat belts worn Seat belts not worn Hispanic 31 283 Non-Hispanic 148 330 Referring to these data, which of the following conclusions should be reached if the appropriate ni hypothesis is conducted using an alpha = .05 level? Tuoria enolzubaos griwollet Jo bidw ,20, of A) There is no relationship between whether someone is Hispanic and whether they wear a seat da srli to nabreg neowisd qilarrodslets al sist bel B) The use of seat belts and whether a person is Hispanic or not is statistically…
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In recent years, many states have enacted tougher voter identification laws requiring a government issued photo ID. Proponents claim that these laws are necessary to reduce voter fraud. Opponents claim that voter fraud is rare and that since as many as 11% of eligible voters do not have the required identification, these tougher laws will discourage millions of minorities and low-income Americans from voting. The Washington Post conducted a national poll (July 7-19, 2012) and found that 1558 out of 2064 adults supported the tougher voter ID laws. 1)Construct a 95% confidence interval for the proportion of adults who approve of tougher voter ID laws. Document your work in the space provided below. Document how you computed the margin of error and the confidence interval in the space provided below. Round all numbers to 4 decimal places. 2)Is it likely that three-fourths of adults approve of these new laws?
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