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each of several cash registers throughout a 2. A record of maintenance costs is kept for store chain. A sample of 14 registers gave the following data Ase (Grears) Maintennce Cost (dollars) Age years) Maintenance Cost (dollars) 142 231 73 90 176 132 167 114 191 160 155 231 202 () Which variable is the explanatory variable and which variable is the response variable? (b) The least-squares regression equation is 789+14.7r. Write one complete sentence intes preting the slope. (c) For every 3 years increase in age, how much would the maintenance cost increase? (d) A particular register is 8 years old. Calculate the predicted maintenance cost for this regster (e) Suppose the actual maintenance cost was s the actual maintenance cost was $202. Calculate the residual. (0) If you owned one of these cash registers, would you prefer a negative or positive residual
math   Statistics-And-Probability   
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LO>A a res (dollar) res pe dive. Naantnown a cent, ~9 remion increasuslhe.muan munten anre cont丶 14汗. far even o , oeinsreas the predicted maintarancast . itn year 1189 14x5 Y-y 8 = 202-19 6.5 55 thu achua mainten om iu than

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