Set up the null hypothesis and alternative hypothesis carefully for the following cases:
(a)k = 4,test for all coefficients other than the intercept to be zero
(b)k = 3,test for the slope coefficient of X1 to be unity,and the coefficients on the other explanatory variables to be zero
(c)k = 10,test for the slope coefficient of X1 to be zero,and for the slope coefficients of X2 and X3 to be the same but of opposite sign.
(d)k = 4,test for the slope coefficients to add up to unity

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The Answer of Set up the null hypothesis and alternative hypothesis carefully for the following cases:
(a)k = 4,test for all coefficients other than the intercept to be zero
(b)k = 3,test for the slope coefficient of X1 to be unity,and the coefficients on the other explanatory variables to be zero
(c)k = 10,test for the slope coefficient of X1 to be zero,and for the slope coefficients of X2 and X3 to be the same but of opposite sign.
(d)k = 4,test for the slope coefficients to add up to unity

Set Up the Null Hypothesis and Alternative Hypothesis Carefully for the Following