SOLUTION: suppose IQ scores were obtained from randomly selected siblings.For 20 such pairs of people,the linear correlation coefficient is 0.892 and the equation of regression line is y^ =

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Question 771754: suppose IQ scores were obtained from randomly selected siblings.For 20 such pairs of people,the linear correlation coefficient is 0.892 and the equation of regression line is y^ = -6.63 + 1.06x, where x represents IQ score of older child.Also, the 20 y values have a mean of 99.2 and 20 x values have mean of 99.55. What is the best predicted IQ of the younger child, given that the older child has an IQ of 99 ? Use a significance level of 0.05. I have tried this by substituting x = 99 in regression equation but the answer is coming out to be wrong.
Answer by oscargut(2103) (Show Source):
You can put this solution on YOUR website!
-6.63+1.06(99) = 98.31
I think is 98.31
If you need to round yo 1 dp the answer is 98.3
I can help you with all of your questions at: mthman@gmail.com
Thanks