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Mathematics 14 Online
OpenStudy (anonymous):

Suppose IQ scores were obtained from randomly selected twins. For 20 such pairs of people, the linear correlation coefficient is 0.918 and the equation of the regression line is y^ = -9.68 + 1.07x, where x represents the IQ score of the twin born first. Also, the 20 x values have a mean of 102.22 and the 20 y values have a mean of 100.05. What is the best predicted IQ of the twin born second, given that the twin born first has an IQ of 104? Use a significance level of 0.05. The best predicted IQ of the twin born second is=

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