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Exhibit 16-4

Question 45

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Exhibit 16-4.The following data shows the cooling temperatures of a freshly brewed cup of coffee after it is poured from the brewing pot into a serving cup.The brewing pot temperature is approximately 180º F;see http://mathbits.com/mathbits/tisection/statistics2/exponential.htm Exhibit 16-4.The following data shows the cooling temperatures of a freshly brewed cup of coffee after it is poured from the brewing pot into a serving cup.The brewing pot temperature is approximately 180º F;see http://mathbits.com/mathbits/tisection/statistics2/exponential.htm For the assumed exponential model ln(Temp) = β<sub>0</sub> + β<sub>1</sub>Time + ε,the following Excel regression partial output is available. Refer to Exhibit 16-4.What is the sample correlation coefficient between ln(Temp) and Time? A) -0.9701 B) 0.9701 C) -0.9849 D) 0.9849 For the assumed exponential model ln(Temp) = β0 + β1Time + ε,the following Excel regression partial output is available. Exhibit 16-4.The following data shows the cooling temperatures of a freshly brewed cup of coffee after it is poured from the brewing pot into a serving cup.The brewing pot temperature is approximately 180º F;see http://mathbits.com/mathbits/tisection/statistics2/exponential.htm For the assumed exponential model ln(Temp) = β<sub>0</sub> + β<sub>1</sub>Time + ε,the following Excel regression partial output is available. Refer to Exhibit 16-4.What is the sample correlation coefficient between ln(Temp) and Time? A) -0.9701 B) 0.9701 C) -0.9849 D) 0.9849 Exhibit 16-4.The following data shows the cooling temperatures of a freshly brewed cup of coffee after it is poured from the brewing pot into a serving cup.The brewing pot temperature is approximately 180º F;see http://mathbits.com/mathbits/tisection/statistics2/exponential.htm For the assumed exponential model ln(Temp) = β<sub>0</sub> + β<sub>1</sub>Time + ε,the following Excel regression partial output is available. Refer to Exhibit 16-4.What is the sample correlation coefficient between ln(Temp) and Time? A) -0.9701 B) 0.9701 C) -0.9849 D) 0.9849 Refer to Exhibit 16-4.What is the sample correlation coefficient between ln(Temp) and Time?


A) -0.9701
B) 0.9701
C) -0.9849
D) 0.9849

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