The file German Coffee contains data on individual coffee consumption (in kg) for 144 randomly selected German coffee drinkers.

a. Construct a data array of the coffee consumption data.

b. Construct a frequency distribution of the coffee consumption data. Within what class do more of the observations fall?

c. Construct a histogram of the coffee consumption data. Briefly comment on what the histogram reveals concerning the data.

d. Develop a relative frequency distribution and a cumulative relative frequency distribution of the coffee data. What percentage of the coffee drinkers sampled consume 8.0 kg or more annually?