Last week, your manager asked you to analyze staffing needs for the foreclosure Department. She was impressed and she wants you to create a report for her. Her intention is to decrease the processing time per document. Based on last week's report, the average number of processed document per hour is 15.11, with a standard deviation of 2.666. That is, one document was reviewed in 238.25 secs.To be objective as much as possible, the manager spoke to an employee whose average was exactly 15 documents per hour. The employee claimed that if she was given a large monitor, the processing would be shorter. They conducted an experiment with a large monitor and measured processing time. After 20 documents, the calculated processing time per document was 190.58 secs. The manager believes that the larger monitor helped to reduce the processing time for reviewing foreclosure documents. Condust a hypothesis test using 95% confidence, which means that significance level a =0.05. 1. Explain if a one-tailed or two-tailed test is needed. 2. If one-tailed test is needed is it a left or right tailed? State both following hypotheses. .Null hypothesis .Alternative. 2. a)Standard deviation. Explain what is standard deviation is. Calculate standard deviation using the scenario. b) Random variable. Explain what is Randon variable is. c) Test type. Compare and contrast t-test and z-test. 3. Decide the level of significance. a) Explain what significance is. b) determined whether the one used in experiment is high, medium or low c) Determine the degree of freedom based on the number of reviewed documents in the experiment (n=20) and based on the formula =n-1. Degree of freedom =? 4. Calculate the tets statistics based on the test type determined in step 1. Test statistics =?

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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Last week, your manager asked you to analyze staffing needs for the foreclosure Department. She was impressed and she wants you to create a report for her. Her intention is to decrease the processing time per document. Based on last week's report, the average number of processed document per hour is 15.11, with a standard deviation of 2.666. That is, one document was reviewed in 238.25 secs.To be objective as much as possible, the manager spoke to an employee whose average was exactly 15 documents per hour. The employee claimed that if she was given a large monitor, the processing would be shorter. They conducted an experiment with a large monitor and measured processing time. After 20 documents, the calculated processing time per document was 190.58 secs. The manager believes that the larger monitor helped to reduce the processing time for reviewing foreclosure documents. Condust a hypothesis test using 95% confidence, which means that significance level a =0.05. 1. Explain if a one-tailed or two-tailed test is needed. 2. If one-tailed test is needed is it a left or right tailed? State both following hypotheses. .Null hypothesis .Alternative. 2. a)Standard deviation. Explain what is standard deviation is. Calculate standard deviation using the scenario. b) Random variable. Explain what is Randon variable is. c) Test type. Compare and contrast t-test and z-test. 3. Decide the level of significance. a) Explain what significance is. b) determined whether the one used in experiment is high, medium or low c) Determine the degree of freedom based on the number of reviewed documents in the experiment (n=20) and based on the formula =n-1. Degree of freedom =? 4. Calculate the tets statistics based on the test type determined in step 1. Test statistics =?

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