Last week, your manager asked you to analyze staffing needs for the foreclosure department. She was so impressed, and she wants you to create another report for her. Her intention waa to decrease the processing time per document. Based on last week's report, the average number of processed document per hour was 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 one of the employee whose average was exactly 15 documents per hour. The employee claimed that if she was given a larger monitor, the processing time would be short. They conducted an experiment with a large monitor and measured processing time. After reviewing 20 documents, the calculated average processing time per document was 190.58 secs. The manager believes that a bigger monitor helped reduce the processing time for reviewing foreclosure documents. Conduct a hypothesis test using confidence level, which means that significant level a =0.05. 1. a)Explain if a one-tailed or two tailed test is needed in the experiment. b) if a one-tailed is needed is it left or right test. 2. a)Standard deviation. Explain what is standard deviation is. b) calculate standard deviation as per the scenario. c)Random variable. Explain what is a rando variable is. d) Test type. Compare and contrast t-test and z-test 3. a)Explain what significance level is. b) state the significance is high, medium or low as per the scenario. c) Determine the degree of freedom based on the number of reviewed documnets in the new experiment (n=20) and on the formula degree of freedom =n-1. 4. Calculate the statistics based on the test type determined in step 1.

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 so impressed, and she wants you to create another report for her. Her intention waa to decrease the processing time per document. Based on last week's report, the average number of processed document per hour was 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 one of the employee whose average was exactly 15 documents per hour. The employee claimed that if she was given a larger monitor, the processing time would be short. They conducted an experiment with a large monitor and measured processing time. After reviewing 20 documents, the calculated average processing time per document was 190.58 secs. The manager believes that a bigger monitor helped reduce the processing time for reviewing foreclosure documents. Conduct a hypothesis test using confidence level, which means that significant level a =0.05. 1. a)Explain if a one-tailed or two tailed test is needed in the experiment. b) if a one-tailed is needed is it left or right test. 2. a)Standard deviation. Explain what is standard deviation is. b) calculate standard deviation as per the scenario. c)Random variable. Explain what is a rando variable is. d) Test type. Compare and contrast t-test and z-test 3. a)Explain what significance level is. b) state the significance is high, medium or low as per the scenario. c) Determine the degree of freedom based on the number of reviewed documnets in the new experiment (n=20) and on the formula degree of freedom =n-1. 4. Calculate the statistics based on the test type determined in step 1.

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