OIS 2340-HW 3.pdf - Chap 3 Graded HW OIS 2340-090 Summer 2015 Business Statistics 3.7 3.7pts Question 1 .He ,twomidterms,aproject,andafinal examination.

OIS 2340-HW 3.pdf - Chap 3 Graded HW OIS 2340-090 Summer...

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8/23/2015 Chap 3 Graded HW: OIS 2340-090 Summer 2015 Business Statistics data:text/html;charset=utf-8,%3Cdiv%20id%3D%22questions%22%20class%3D%22assessment_results%20%20show_correct_answers%22%20style%3D%22clear… 1/14 3.7 / 3.7 ptsQuestion 1A professor wishes to develop a numerical method for giving grades. Heintends to base the grade on homework, two midterms, a project, and a finalexamination. He wishes the final exam to have the largest influence on thegrade. He wants the project to have 10%, each midterm to have 20%, and thehomework to have 10% of the influence of the semester grade.For a student with the following grades during the quarter, calculate aweighted average for the course: Instrument Final Project Midterm 1 Modterm 2 Homework Percentage Grade 64 98 67 63 89 68.30 68.50 73.30 70.30 Correct! 3.7 / 3.7 ptsQuestion 2The following data reflect the number of customers who test drove new carseach day for a sample of 20 days at the Redfield Ford Dealership.5729497104756407634146Given these data, what is the variance?
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8/23/2015 Chap 3 Graded HW: OIS 2340-090 Summer 2015 Business Statistics data:text/html;charset=utf-8,%3Cdiv%20id%3D%22questions%22%20class%3D%22assessment_results%20%20show_correct_answers%22%20style%3D%22clear… 2/14 Approximately 3.08 Approximately 181 0.69 Approximately 9.52 Correct! 3.7 / 3.7 ptsQuestion 3Todd Lindsey & Associates, a commercial real estate company located inBoston, owns six office buildings in the Boston area that it leases tobusinesses. The lease price per square foot differs by building due to locationand building amenities. Currently, all six buildings are fully leased at theprices shown here.Price perSquare FootNumber ofSquare FeetBuilding 1$75125,000Building 2$8537,500Building 3$9077,500Building 4$4535,000Building 5$5560,000Building 6$110130,000Compute the weighted average (mean) price per square foot for thesebuildings. 80.1586.2583.25Correct!86.15
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8/23/2015 Chap 3 Graded HW: OIS 2340-090 Summer 2015 Business Statistics data:text/html;charset=utf-8,%3Cdiv%20id%3D%22questions%22%20class%3D%22assessment_results%20%20show_correct_answers%22%20style%3D%22clear… 3/14 3.7 / 3.7 ptsQuestion 4In the annual report, a major food chain stated that the distribution of dailysales at its Detroit stores is known to be bell-shaped, and that 95 percent ofall daily sales fell between $19,200 and $36,400. Based on this information,what were the mean sales? Correct! Canʹt be determined without more information. 3.7 / 3.7 pts Question 5 If the age distribution of customers at a major retail chain is thought to be bell - shaped with a mean equal to 43 years and a standard deviation equal to 7 years, the percentage of customers between the ages of 29 and 57 years is: approximately 68. at least 75. approximately 95. Correct! 3.7 / 3.7 pts
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