An Experiment Was Performed on a Certain Metal to Determine $\hat { y }$

question 184

Multiple Choice

An experiment was performed on a certain metal to determine if the strength,in g/cm²,was a function of heating time,in minutes.The least-squares regression line was found to be $\hat { y }$
= 1 + 1x.What is the predicted value strength when the metal is heated for 4 minutes?

• A)1 g/cm²
• B)2 g/cm²
• C)3 g/cm²
• D)4 g/cm²
• E)5 g/cm²

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