Question: A simple random sample of 100 men aged 2534 averaged 70 inches in height and had a standard deviation of 3 inches. Their incomes averaged
A simple random sample of 100 men aged 25–34 averaged 70 inches in height and had a standard deviation of 3 inches. Their incomes averaged $34,900 and had a standard deviation of $17,200. Fill in the blank: From the least-squares line, we would predict that the income of a man 70 inches tall would be .
i. less than $34,900.
ii. greater than $34,900 iii. equal to $34,900.
iv. We cannot tell unless we know the correlation.
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