To test the fairness of law enforcement in its area, a local citizens' group wants to know whetherwomen and men are unequally likely to get speeding tickets. Four hundred randomly selectedadults were phoned and asked whether or not they had been cited for speeding in the last year.Using the results in the following table and a level of significance, test the claim of the citizens'group. Let men be Population 1 and let women be Population 2.(hint - Proportions 2 sample, twotail test)Speeding TicketsTicketedNot TicketedMen21173Women37169Statistic - -2.03, Reject null hypothesisO Statistic - -3.03, Reject null hypothesisO Statistic = -2.03, Accept null hypothesisO Statistic - -5.03, Accept null hypothesis

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Answered: To test the fairness of law enforcement…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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A certain company will purchase the house of any employee who is transferred out of state and will handle all details of reselling the house. The purchase price is based on two assessments, one assessor being chosen by the employee and one by the company. Based on the sample of eight assessments shown, do the two assessors agree? Use the .01 level of significance. Assessments of Eight Homes ($ thousands) Assessed by Home 1 Home 2 Home 3 Home 4 Home 5 Home 6 Home 7 Home 8 Company 330 345 452 270 298 286 537 744 Employee 317 350 473 280 307 283 523 769 Click here for the Excel Data File (a) Choose the appropriate hypotheses. Assume d = company assessed value – employee assessed value. multiple choice 1 H0: μd = 0 versus H1: μd ≠ 0. H0: μd ≠ 0 versus H1: μd = 0. (b) State the decision rule for .01 level of significance. (Round your answers to 2 decimal places. A negative value should be indicated by a minus sign.) Reject the null hypothesis if tcalc < or…
Another question asked for a ranking of the condition of the road, based on the type of road. For the road types of interstate highway, U.S. highway, state (“M") highway, and local roads, residents were asked to evaluate the current condition, with choices of good, bad, or neutral. Researchers wish to evaluate if there is some relationship between the type of road and the road condition. This is a O Hypothesis test O Confidence interval For One proportion One mean O Paired mean O Difference in two means O Slope for a linear relationship O Chi-square goodness-of-fit O Chi-square test of independence
Every year during home football games the Carroll College fans do push-up contests to see how many they can do. Suppose that a curious stats student in the stands kept track of the number of push-ups completed for several students of both genders. Males 31 31 24 18 30 16 28 13 26 23 Females 16 11 10 1 26 26 6 9 16 32 Consider the hypothesis that males in this contest can do more pushups than females. Use an significance level to test the claim. The test statistic is Construct a 99% confidence interval for the mean of the differences between males and females.
Cite a statistical experiment and its sample space.
Please help me solve parts A and B of questions 21. Suppose that instead of having a box with square ends, youhave a box with square sides so that its dimensions are h by hby w and the girth is 2h +2w. What dimensions will give thebox its largest volume now?Graph the volume as a function of h and compare what yousee with your answer in part (a).
Sierra College students enrolled in an online Elementary Statistics course were asked to participate in an anonymous onlne survey. The survey asked the students "Which type of device will you primarily use to access your online course in Canvas?". Of the 152 students who answered this question, 20 responded "a desktop computer", 121 responded "a laptop computer", 6 responded "a smartphone", and 5 responded "a tablet". The Sierra College Mathematics Department believes that less than 5% of students enrolled in an online Elementary Statistics course primarily uses a smartphone to access their online course in Canvas. Use the data collected in the survey to conduct a hypothesis testing procedure to test this belief. What conclusion should be reached according to the results of this hypothesis test?
1.) A researcher used the sample median as a measure of center instead of the sample mean. What do you think could have informed his decision and why? 2.) An investigator decided to conduct a research to describe the average number of females in each family. Considering the case of 200 families in the town. Describe what may contribute to the difference between the value of the sample statistics and its corresponding population parameter.

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