5. (a) Why is simple linear regression important? Distinguish between linear regression and correlation. (b) Suppose that the profit of running a Computer Business depends mainly on the investment. The regression equation is given by Profit = 300 + 2.5(investment). Interpret the intercept and slop of this model. If investment amount is 2000 BDT then what amount of profit you are expecting. Interprete the slope of this model.

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