2. Identify the null hypothesis, alternative hypothesis, test statistic, p-value(s), conclusionabout the null hypothesis, and final conclusion that addresses the original claim.In a study of 11,000 car crashes, it was found that 5720 of them occurred within 5 miles ofhome (based on data from Progressive Insurance). Use a 0.01 significance level to test theclaim that more than 50% of car crashes occur within 5 miles of homes. Are the resultsquestionable because they are based on a survey sponsored by an insurance company?

Sample size n =11000 Favorable cases x =5720 Sample proportion p^=x/n =5720/11000 =0.52

Answered: Identify the null hypothesis,…

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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Hi Great Bartleby Team, I need asap help for this exercise, Please answer all the parts of the exercise. Thanks a lot in advance.
Cell Phones and Driving In the author’s home town of Madison, CT, there were 2733 police traffic stops in a recent year, and 7% of them were attributable to improper use of cell phones. Use a 0.05 significance level to test the claim that the sample is from a population in which fewer than 10% of police traffic stops are attributable to improper cell phone use.
In the first two months of a recent year, 95 occupants were killed by air bags, and 63 of them were "improperly belted" (based on data from the National Highway Traffic Safety Administration). Use a 0.05 significance level to test the claim that among occupants killed by air bags, the majority were improperly belted.
use paragragh to answer number 18
A manufacturer wants to test the claim that more than 5% of widgets coming of the manufacturing line are defective. In random sample of 1200 widgets it is found that 69 of those are defective. Use a significance level of 0.05 to test the manufacturers claim.
Consider a drug testing company that provides a test for marijuana usage. Among 293 tested subjects, results from 29 subjects were wrong (either a false positive or a false negative). Use a 0.10 significance level to test the claim that less than 10 percent of the test results are wrong
In a study of 778 randomly selected medical malpractice lawsuits, it was found that 511 of them were dropped or dismissed. Use a 0.01 significance level to test the claim that most medical malpractice lawsuits are dropped or dismissed? What is the test statistic?
Define the related-repeated (pre/post) two-sample t-test and the related-matched two-sample t-test.
Officials from Pennsylvania Department of Transportation (PENNDOT) question how a sample of 120 hours can prove whether or not more cars pass through with machine collections over manual collection, that is, how the results from the sample reflect the population. In a detailed paragraph of at least six to seven sentences, based on your knowledge and understanding of the concepts of inferential statistics, random sampling, and tests of statistical significance, respond to PENNDOT. Ensure that you mention what inferential statistics is and why we use it, what random sampling is, and what statistical significance is and why we test for it. if we ponder the relationship between commute time and job satisfaction while driving back and forth to campus. Your instructor hypothesizes that people with a shorter commute time will have higher degrees of job satisfaction. Randomly sampling 600 Valley commuters, the instructor finds the following data listed in frequencies: Table 2: Commuters…
Does more than 60% of teenagers jog? A survey states, 63% of 45,574 of teenagers surveyed do jog. Use a test of hypothesis to test the validity of the claim. State your conclusion in the context of the problem. ( asssume significance levela = 0.01). Be sure to check the validity of the inferences prior to using the concept.
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I believe that the population mean number of times that adults go for a walk each week is less than 2.0. I spoke with 8 adults and found that they went on walks 3,5,2,1,0,4,0 and 5 times last week. Test this hypothesis at the 0.5 significance level.

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