Question

Suppose IQ scores were obtained for 20 randomly selected sets of siblings . The 20 pairs of measurements yield x overbar equals98.26​, y overbar equals99​, requals 0.911​, ​P-valueequals ​0.000, and ModifyingAbove y with caret equals negative 5.9 plus 1.07 x ​, where x represents the IQ score of the older child . Find the best predicted value of ModifyingAbove y with caret given that the older child has an IQ of 102 ​? Use a significance level of 0.05 g

Answer 1

The answer to the best prediction is 115.04

Explanation:

We have to:

x = 102

They also tell us that:

y = 5.9 + 1.07 * x

If we replace we have:

y = 5.9 + 1.07 * (102)

y = 115.04

Therefore, the best predicted value of ModifyingAbove and with caret given that the older child has an IQ of 102 is 115.04