Nine Pairs of Data Yield $\mathrm { r } = 0.867$

question 32

Multiple Choice

Nine pairs of data yield $\mathrm { r } = 0.867$ and the regression equation $\hat { y } = 19.4 + 0.93 \mathrm { x }$ . Also, $\overline { \mathrm { y } } = 64.7$ . What is the best predicted value of $y$ for $x = 48$ ?

• A) 79.6
• B) 64.7
• C) 57.8
• D) 64

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