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Consider the linear regression model Y Bo+BX1+ B2X2i+u. a) Suppose you multiply all the X2 values by 2. What will be the effect of

Consider the linear regression model Y Bo+BX1+ B2X2i+u. a) Suppose you multiply all the X2 values by 2. What will be the effect of this rescaling, if any, on the estimates of the parameters and their standard errors? b) Now instead of (a), suppose you multiply all the Y values by 2. What will be the effect of this, if any, on the estimated parameters and their standard errors?

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