In a study of alternative office layouts, Pro World Properties, a large international realty company, chose 12 of its local offices to test the impact of two different layouts on those working in the offices. The offices were paired by size, region, function and performance history. One of the variables of interest in the study was the number of sick days taken per office worker. The table below shows the sick days reported for the six office pairs over the six month trial period. Assuming that all necessary population conditions are satisfied, construct a hypothesis test to test a null hypothesis that there is no difference in average number of sick days taken for the two layouts in the study. Use a significance level of 5%.
Answer to relevant QuestionsA random sample of 10 students was selected at Excelsior University for a study of how students change the way they spend their out-of-class time from junior to senior year. As part of the study, when the students in the ...Tilton Athletic Gear is planning to conduct surveys in Los Angeles and New York in an effort to determine whether consumer awareness of the Tilton Athletic brand differs among consumers in these two major markets. Sample ...Refer to Exercise 2 (R & D budget), where the least squares line is ˆy =3.5 1.0x. a. Report the SSE and s y. x values. b. Tell what these measures represent. Compute and interpret the r2 and r values for the regression analysis described in Exercise 1 (Jessica’s coffee shop). Be sure to show the correct sign for r. Of interest to many economists is the connection between mortgage interest rates and home sales. For a simple linear regression analysis attempting to link the mortgage interest rate (x) to new home sales (y), suppose the ...
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