2. For the data below, the regression model... Suppose X is a a. Interpret the r

Question

2. For the data below, the regression model...
Suppose X is a a. Interpret the regression coefficient associated with variable x1 b. Interpret the regression coefficient associated with variable c. Suppose that the tSTAT test statistic for testing the contribution of variable X2 is 1.87.Atthe 0.10 level of significance, is there evidence hatvariable x makes a significant contribution to the model? a. Interpret the regression coefficient associated with variable X1 by a positive change of units) Holding constant the effect of for each increase of one unit in T the predicted mean value of Y b. Interpret the regression coefficient associated with variable xa. the predicted mean value ofY by a positive change of units) Holding constant the value of changing the value of form to isestimated to c. Determine the null and alternative hypotheses.

Explanation / Answer

1)

a)

Holding constant the effect of X2 for each increase of one unit in X1 the predicted mean value of y would go up by positive change of 3 units.

b)

Holding constant the effect of X1 for each increase of one unit in X2 the predicted mean value of y would go down by positive change of -2 units.

c)

B) Do not reject H0. There is sufficient evidence at 0.10 level of significance that variable X2 makes a significant contribution to the model.

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