A research center claims that at least 23% of adults in a certain country think that their taxes will be audited. In a random sample of 900 adults in that country in a recent year, 20% say they are concerned that their taxes will be audited. Ata = 0.05, is there enough evidence to reject the center's claim? Complete parts (a) through (e) below.(a) Identify the claim and state Ho and Ha.Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice.(Type an integer or a decimal. Do not round.)O A. The percentage of adults in the country who think that their taxes will be audited is n%.O B. At least % of adults in the country think that their taxes will be audited.O C. Less than % of adults in the country think that their taxes will be audited.OD.% of adults in the country think that their taxes will be audited.

Given that Sample size n=900 Population proportion p=23%=0.23 Sample proportion p^=20%=0.20

Answered: A research center claims that at least…

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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Part C: Perform a chi-square test for the hypotheses. H0: The number of courses enrolled by students at the local college and their employment status have no association.Ha: The number of courses enrolled by students at the local college and their employment status have an association. What can you conclude based on the p-value?
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As such, the final conclusion is that... There is sufficient evidence to warrant rejection of the claim that the first population mean is greater than the second population mean. There is not sufficient evidence to warrant rejection of the claim that the first population mean is greater than the second population mean. The sample data support the claim that the first population mean is greater than the second population mean. There is not sufficient sample evidence to support the claim that the first population mean is greater than the second population mean.
6(1)
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A medical device company has developed a new needle that they claim reduces the incidence of injection-site reactions for a particular medication. An experiment is to be conducted to determine if there is sufficient evidence to make that claim. Which of the following is a correct description and consequence of a Type I error? A. A Type I error would occur if the medical device company incorrectly administers the medication with the new needle, causing it to be impossible to determine whether the number of injection-site reactions have increased or decreased with the new needle. B. A Type I error would occur if, in reality, the new needle does not reduce the incidence of injection-site reactions, but the significance test detects such a difference. The consequence of such an error would be that the medical device company would produce this new needle, but it would not be beneficial. C. A Type I error would occur if, in reality, the new needle reduces the incidence of injection-site…
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