For each of the following situations, give a set of possible data values that might arise from making the observations described.
a. The manufacturer for each of the next 10 automobiles to pass through a given intersection is noted.
b. The grade point average for each of the 15 seniors in a statistics class is determined.
c. The number of gas pumps in use at each of 20 gas stations at a particular time is determined.
d. The actual net weight of each of 12 bags of fertilizer having a labeled weight of 50 pounds is determined.
e. Fifteen different radio stations are monitored during a 1-hour period, and the amount of time devoted to commercials is determined for each.