Question

a. identify which variable is the explanatory variable and which is the response variable.
explanatory variable millimeters of caffeine. response variable hours of sleep

b. make a well labeled scatterplot of the data.

1. bryce recorded the number of field goals he made at different distances from the goal post during practice.

Explanation:

Step1: Identify variables

The amount of caffeine is likely to influence the hours of sleep. So, the explanatory variable is the millimeters of caffeine and the response variable is the hours of sleep.

Step2: Scatter - plot creation

To create a scatter - plot, we take the millimeters of caffeine values on the x - axis and the hours of sleep values on the y - axis. For each pair of values (caffeine, hours of sleep), we plot a point on the graph. However, as this is text - based, we can't actually draw the scatter - plot here but the general steps are to label the x - axis as "Millimeters of Caffeine", the y - axis as "Hours of Sleep", and then plot the points corresponding to the data pairs (0,7), (5,6), (9,4), (4,7), (8,3), (4,6), (3,8).

Answer:

a. Explanatory variable: Millimeters of Caffeine; Response variable: Hours of Sleep
b. A scatter - plot should have the x - axis labeled "Millimeters of Caffeine", the y - axis labeled "Hours of Sleep", and points plotted for each pair of data values.