Question: Time Allowed - 30 Units 240 Age Question One: The data below relates the weekly maintenance cost to the age of 10 machines of similar

Time Allowed - 30 Units 240 Age Question One: The data below relates the weekly maintenance cost to the age of 10 machines of similar type in Hill Investment manufacturing company. Machine 1 2 3 4 5 6 7 8 10 Cost 190 250 300 310 335 300 300 350 395 5 10 15 20 30 30 30 50 50 60 i. Find the least squares regression line of maintenance cost on age. ii. Predict the maintenance cost for a machine of this type which is 40 months old. iii. Calculate linear correlation. Question Two: Itemize the chi-square steps which need to be undertaken to determine if two attributes are dependent or independent of one another

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