3.5 tion coeffic ient ts 0.852 and the equation of the regression line is y-3.44

Question

3.5 tion coeffic ient ts 0.852 and the equation of the regression line is y-3.44 097x, where the 20 y values have a mean of 95.1. What is the best predicted IQ of the twin born first, given that Ihe pose IQ scores were obtained from randomly selected twins. For 20 such pairs of people, the inear correla esents the ia score of the hwin bom second. Also, the 20 x values have a mean of 94 85 and n bom second has an 1Q of 94? Use a significance level of 0.0 Clück the icon to view the crtical values of the Pearson corelation coeficient t e best predicted 1Q of the twin bom first is tound to two decimal places as needed ) Enter your answer in the answer box and then click Check Answer Clear All All parts showing

Explanation / Answer

we are given that the regression equation is

y = 3.44 + 0.97x
so simply put the value of 94 as x in the equation and solve it

y = 3.44+ 0.97*94 = 94.62

the best predicted score is 94.62

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