Questions from Statistical Techniques


Q: The following is the number of retirees receiving benefits from the State

The following is the number of retirees receiving benefits from the State Teachers Retirement System of Ohio from 1996 until 2015. a. Plot the data. b. Determine the least squares trend equation. Us...

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Q: The enrollment in the College of Business at Midwestern University by quarter

The enrollment in the College of Business at Midwestern University by quarter from 2013 to spring 2017 is: Using the ratio-to-moving-average method: a. Determine the four quarterly indexes. b. Inter...

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Q: Develop a trend equation for the net sales ($ million) for

Develop a trend equation for the net sales ($ million) for Home Depot. Consider both a linear trend and a nonlinear trend. Which one would you select and why? Given the trend equation you selected, fo...

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Q: Use the variables mean amount per transaction and number of associates to

Use the variables mean amount per transaction and number of associates to forecast net sales. Are these two independent variables reasonable predictors of net sales? What is the R2 value? Is it large?...

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Q: Christina Sanders is a member of the women’s basketball team at Windy

Christina Sanders is a member of the women’s basketball team at Windy City College. Last season, she made 55% of her free throw attempts. In an effort to improve this statistic, she...

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Q: Swiss Watches, Ltd. purchases watch stems for their watches in

Swiss Watches, Ltd. purchases watch stems for their watches in lots of 10,000. Their sampling plan calls for checking 20 stems, and if 3 or fewer stems are defective, the lot is accepted. a. Based on...

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Q: At the beginning of each football season, Team Sports, the

At the beginning of each football season, Team Sports, the local sporting goods store, purchases 5,000 footballs. A sample of 25 balls is selected, and they are inflated, tested, and then deflated. If...

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Q: The following regression output was obtained from a study of architectural firms

The following regression output was obtained from a study of architectural firms. The dependent variable is the total amount of fees in millions of dollars. x1 is the number of architects employed b...

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Q: A financial executive for Fidelity Investments lives in Boston but frequently must

A financial executive for Fidelity Investments lives in Boston but frequently must travel to New York. She can go to New York by car, train, or plane. The cost for a plane ticket from Boston to New Yo...

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Q: The quality assurance department at Malcomb Products must either inspect each part

The quality assurance department at Malcomb Products must either inspect each part in a lot or not inspect any of the parts. That is, there are two decision alternatives: inspect all the parts or insp...

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