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

question 9

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?

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Definitions:

Predict

To declare or indicate a likely event or outcome in the future based on current evidence or patterns.

Null Hypothesis

A hypothesis that assumes no significant difference or relationship exists in the population from which a sample is drawn.

Multiple Regression Equation

A statistical technique that models the relationship between a dependent variable and two or more independent variables by fitting a linear equation to observed data.

Regression Coefficients

Regression coefficients are values that quantify the relationship between each independent variable and the dependent variable in a regression model.