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Leslie Sporting Goods is a locally owned store that specializes in printing team jerseys. The majority of its business comes from orders for various local teams and organizations. While Leslieâs prints everything from bowling team jerseys to fraternity/sorority apparel to special event shirts, summer league baseball and softball team jerseys are the companyâs biggest source of revenue.
A portion of Leslieâs operating information for the companyâs last year follows:
Month | Number of Jerseys Printed | Operating Cost |
January | 220 | $5,875 |
February | 215 | 5,780 |
March | 245 | 5,950 |
April | 555 | 8,700 |
May | 700 | 9,700 |
June | 615 | 9,295 |
July | 460 | 6,220 |
August | 350 | 6,150 |
September | 320 | 6,040 |
October | 250 | 5,960 |
November | 205 | 4,925 |
December | 200 | 4,810 |
5. Perform a least-squares regression analysis on Leslieâs data. (Use Microsoft Excel or a statistical package to find the coefficients using least-squares regression. Round your answers to 2 decimal places.)
6. Using the regression output, create a linear equation (y = a + bx) for estimating Leslieâs operating costs. (Round your answers to 2 decimal places.)
7. Using the least-squares regression results, calculate the storeâs expected operating cost if it prints 630 jerseys. (Round your intermediate calculations to 2 decimal places. Round your final answer to 2 decimal places.)