1-2.For the data involving regression DI (Y) on IQ (X) assume that the sample of 17 observations consist male only. Now suppose that another sample of observations DI (Y) and IQ(X) has been obtained for 14 females. The information needed to compare the straight-line regression equation for males and females is given in the following table.

Sex Group	n	0	1	X	Y	Sx2	SY|x2(MSE)	r
Males	17	70.846	-0.444	101.4111	25.812	215.882	24.335	-0.807
Females	14	61.871	-0.438	101.053	17.579	175.497	16.692	-0.825

2.Determine the least square line of VOTE(Y) on TVEXP(X) for males and females separately.

2.Test H₀: "The slopes are the same for the males and females". Versus H_A: "Males have more positive slope" (Write mathematical notation for hypothesis also)

3. Test H₀: "The intercept are the same for the populations of males and females". Versus H_A: "The intercepts are different" (Write the mathematical notation for hypothesis also)