Question
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
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 HA: "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 HA: "The intercepts are different" (Write the mathematical notation for hypothesis also)
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