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Mathematics, 30.06.2019 05:10 superfly903
Atyping instructor builds a regression model to investigate what factors determine typing speed for students with two months of instruction. her regression equation looks like: y' = 11 + 7x1 + 5x2 + 3x3 where: y' = typing speed in words per minute; x1= hours of instruction per week; x2= hours of practice per week; x3 = hours of typing per week necessary for school or work; a new student is taking 2 hrs of typing instruction per week, will practice 5 hrs per week and must type 2.5 hours per week for work. if the standard error of the estimate is 2, within what range do we have a 95.45% probability that that student's typing speed will be in two months?
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