QUESTION 12The test for screening donated blood for the presence of the AIDS virus was developed in the 1980s. It is designed to detect antibodies, substancesproduced by the body of donors carrying the virus, however it is not 100% accurate. The developer of the test claimed that the test would produce fewerthan 5% false positives and fewer than 1% false negatives. In order to evaluate the accuracy of the test 1000 persons known to have AIDS and 10,000persons known to not have aids were given the test. The following results were tabulated:True State of PatientTest ResultHas AidsDoes Not Have AidsTotalPositive Test9975301,527Negative Test9,4709,473 True State of PatientHas AidsDoes Not Have AidsTotalTest ResultPositive Test9975301,527Negative Test3.9.4709,473Total1,00010,00011,000Place a 95% confidence interval on the proportion of false negatives by the test. Oof the alternative methods available, use a method generallyconsidered to yield satisfactory results for this situation. Report the upper limit of the confidence interval with 4 decimals

Given information: Test result Has Aids Does not have Aids Sum Positive Test 997 530 1527…

Answered: True State of Patleni Test Result Has…

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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Work Time Lost due to Accidents At a large company, the Director of Research found that the average work time lost by employees due to accidents was 91 hours per year. She used a random sample of 18 employees. The standard deviation of the sample was 5.9 hours. Estimate the population mean for the number of hours lost due to accidents for the company, using a 95% confidence interval. Assume the variable is normally distributed. Round intermediate answers to at least three decimal places. Round your final answers to the nearest whole number.
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Construct a 99% confidence interval of the population proportion using the given information. x= 125, n= 250 Click here to view the table of critical values. The lower bound is The upper bound is (Round to three decimal places as needed.)
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Scores on an English test from 30 students in Class One has a mean of 33 and a standard deviation of 7.2. Scores on an English test from 40 students in Class Two has a mean of 39 and a standard deviation of 5.5. Assuming the two classes are independent, construct a 90%confidence interval for difference between the mean scores for Class One and Class Two. Round your answer to 3 decimal places. Base on the confidence interval, what conclusion can you draw? Group of answer choices (-8.530,-3.470) Group 2 is bigger (-8.530,-3.470) Group 1 is bigger (-8.639,-3.361) No conclusion (-8.639,-3.361) Group 2 is bigger (-6.769,-5.231) Group 2 is bigger
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please help solve attached image and below questions regarding attached image identify the test statistic identify the p value what is the conclusion? the p value is greater than or less than the significance level of a=0.05 so we reject or fail to reject. there is not sufficent or sufficent evidence to warrant rejection of the claim that women and men have equal sucesses in challenging calls? b) Test the claim by constructing an appropriate confidence interval. The 95% confidence interval is ___<(p1−p2) < ____. c) What is the conclusion based on the confidence interval? Because the confidence interval limits do include or do not include 0, there does not or does appear to be a significant difference between the two proportions. There is sufficent or insufficent evidence to warrant rejection of the claim that men and women have equal success in challenging calls.

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