Question: Please help me with this problem I been stuck in this problem for 45 min and don't know how to go about it ???? 1.

Please help me with this problem I been stuck in this problem for 45 min and don't know how to go about it ????

1. In a study of the stability of IQ scores, a large group of individuals is tested once at age 18 and again at age 35. At age 18, the average score was 100, with SD of 15. At age 35, the average score was 100, with SD of 15. The correlation coefficient is 0.8. Estimate the average score at age 35 for all individuals who scored 120 at age 18. For the people that scored 120 at the age 18, what percentage scored more than 140

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