Question: A large study was made on the blood-pressure problem discussed in the pre- vious exercise. It found that first readings average 130 mm, and second

A large study was made on the blood-pressure problem discussed in the pre-

vious exercise. It found that first readings average 130 mm, and second read-

ings average 120 mm; both SDs were about 15 mm. Does this support either doctor's argument? Or is it the regression effect? Explain. PL968

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