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: The following data shows the cost for word processing job verses time. Time(hours) X Cost($) Y 02 20 05 32 10 51 12 62

: The following data shows the cost for word processing job verses time.

Time(hours) X Cost($) Y

02 20

05 32

10 51

12 62

15 70

(a) Find the equation of regression line(X on Y) to predict the cost of word processing.

(b) Compute the Rank correlation.

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