Homework: Week 5 Homework Save Score: 0 of 6 pts 9 of 10 (10 complete HW Score:
ID: 3352896 • Letter: H
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Homework: Week 5 Homework Save Score: 0 of 6 pts 9 of 10 (10 complete HW Score: 51%, 30 6 of 60 pts X) 10.3.5 Question Hep * Suppose 1Q scores were obtained from randomly selected siblings For 20 such pairs of people, the linear correlation coefficient is 0 922 and the equation of the regression line is y 439 1.04x, where x represents the 1Q score of the younger child Aluo the 20 x values have a mean of 104 12 and the 20 y values have a mean of 103 85 What is the best predicted 1Q of the older child, given that the younger child has an IQ of 110? Use a significance level of 0 05 Click the icon to view the critical values of tho Pearson correlation coefficient r The best predicted 1Q of the older child is Round to two decimal places as needed )Explanation / Answer
for (n-2=18) degree of freedom and 0.05 level critical value of r =0.4438
as correlation coefficient is higher than critical value we can conclude that there exist a linear relation betwen x and y
therefore best predicted IQ =-4.39+1.04*110 =110.01
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