Exhibit 16-4

Question 58
Multiple Choice

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 img For the assumed exponential model ln(Temp)= β0 + β1Time + ε,the following Excel regression partial output is available. img img Refer to Exhibit 16-4.What is the percentage of variations in ln(Temp)explained by Time? A)45.48% B)97.01% C)1.40% D)46.88%