PC World provided ratings for the top five small-office laser printers and five-corporate laser printers (Pc World, February 2003). The highest rated small-office laser printer was the Minolta-QMS...

Extracted text: PC World provided ratings for the top five small-office laser printers and five-corporate laser printers (Pc World, February 2003). The highest rated small-office laser printer was the Minolta-QMS PagePro 1250W, with an overall rating of 91. The highest rated corporate laser printer, the Xerox Phaser 4400/N, had an overall rating of 83. The following data show the speed for plain text printing in pages per minute (ppm) and the price for each printer. Name Minolta-QMS PagePro 1250W Brother HL-1850 Туре Small Office Small Office Small Office Small Office Speed (ppm) Price ($) 12 199 10 499 Lexmark E320 Minolta-QMS PagePro 1250E 12.2 299 10.3 299 HP Laserjet 1200 Small Office 11.7 399 Xerox Phaser 4400/N Согрогate Coгрогate |Согрогate Согрогate |Согрогate 17.8 1850 Вгother HL-2460N IBM Infoprint1120n Lexmark W812 Oki Data B8300n 16.1 1000 11.8 1387 19.8 2089 28.2 2200 Calculate the degrees of freedom for testing whether printing speed and price are related at the a = 0.05 level of significance.