Instruction 3-15
Energy Drink Consumption Has Continued to Gain in Popularity

Short Answer

Instruction 3-15
Energy drink consumption has continued to gain in popularity since the 1997 debut of Red Bull, the current leader in the energy drink market. Given below are the exam scores and the number of 12-grams energy drinks consumed by 10 college students within a week prior to the exam.
$$\begin{array} { | l | c | c | c | c | c | c | c | c | c | c | } \hline \text { Exam Scores } & 75 & 92 & 84 & 64 & 64 & 86 & 81 & 61 & 73 & 93 \\\hline \begin{array} { l } \text { Number of } \\\text { Drinks }\end{array} & 5 & 3 & 2 & 4 & 2 & 7 & 3 & 0 & 1 & 0 \\\hline\end{array}$$
-Referring to Instruction 3-15,what is the sample covariance between the exam scores and the number of energy drinks consumed?