A market researcher intends to study the consumer preference between regular and decaffeinated coffee. Examine the plausibility of the model of Bernoulli trials in the following situations.

(a) One hundred consumers are randomly selected and each is asked to report the types of coffee (regular or decaffeinated)

purchased in the five most recent occasions.

If we consider each purchase as a trial, this inquiry deals with 500 trials.

(b) Five hundred consumers are randomly selected and each is asked about the most recent purchase of coffee. Here again the inquiry deals with 500 trials.