Questions: Jenae is interested in understanding the coffee preferences of her coworkers and decides to brew 3 different varieties each day and track how much of each variety is consumed and by whom. Select one control in Jenae's experimental study. Jenae monitors the habits of the co-workers who do not drink coffee. Jenae keeps the same amount of sugar and artificial sweetener at each brewing location. Jenae assigns some coworkers to drink only water. Jenae creates a survey where her coworkers can describe their coffee preferences.

Solution Steps

In Jenae's experimental study on coffee preferences, a control is defined as a standard of comparison that remains constant throughout the experiment. Among the options provided, the control is:

• Jenae keeps the same amount of sugar and artificial sweetener at each brewing location.

This ensures that the only variable affecting coffee preference is the type of coffee itself, allowing for a fair comparison.

To further understand the coffee preferences, we can analyze the coffee consumption data collected from coworkers. The total amount of coffee consumed is given as:

\[ \sum_{i=1}^N x_i = 35 \]

where \( N = 10 \) represents the number of coworkers surveyed.

The mean coffee consumption \( \mu \) can be calculated using the formula:

\[ \mu = \frac{\sum_{i=1}^N x_i}{N} = \frac{35}{10} = 3.5 \]

This indicates that, on average, each coworker consumed \( 3.5 \) units of coffee.

Final Answer