China has 1.2 billion people. Marketers want to know which international brands they have heard of.

A large study showed that 62% of all Chinese adults have heard of Coca-Cola. You want to simulate choosing a Chinese at random and asking if he or she has heard of Coca-Cola. One correct way to assign random digits to simulate the answer is:

(a) One digit simulates one person’s answer; odd means

“Yes” and even means “No.”

(b) One digit simulates one person’s answer; 0 to 6 mean

“Yes” and 7 to 9 mean “No. ”

(c) One digit simulates the result; 0 to 9 tells how many in the sample said “Yes.”

(d) Two digits simulate one person’s answer; 00 to 61 mean “Yes” and 62 to 99 mean “No. ”

(e) Two digits simulate one person’s answer; 00 to 62 mean “Yes” and 63 to 99 mean “No. ”