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A simple random sample of 100 men aged 25-34 averaged 70
Chapter 7, Problem 15E(choose chapter or problem)
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.
Questions & Answers
QUESTION:
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.
ANSWER:
Step 1 of 2
Given that,
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 $I7,200.
It is required to fill the blank from the provided options for the statement:
From the least-squares line, we would predict that the income of a man 70 inches tall would be _____________.