Question

Use the correct assignment of digits from the previous problem and the random digits below to simulate the answers of 10 Chinese. Read across the row of random digits from left to right. How many of these 10 Chinese have heard of Coca-Cola?

19223 95034 05756 28713 96409 12531 42544 82853
(a) 4
(b) 5
(c) 6
(d) 7
(e) 8

Answer 1

The correct answer is (d) Two digits simulate one person's answer; 00 to 62 mean "Yes" and 63 to 99 mean "No.

The percentage of Chinese adults who have heard of Coca-Cola is 62%. This means that out of 100 people, 62 have heard of it.

To simulate this, you can use a two-digit random number for each person.

If the number falls between 00 and 62 (inclusive), you can consider it as a "Yes" (they have heard of Coca-Cola).

If the number is between 63 and 99 (inclusive), you can consider it as a "No" (they have not heard of Coca-Cola).

This method accurately reflects the 62% awareness rate.

Question

16. 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 10 Chinese at random and asking each 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 mean "No." (b) One digit simulates one person's answer; 0 to 6 mean "Yes" and 7 to 9 mean "No." (c) Two digits simulate one person's answer; 00 to 61 mean "Yes" and 62 to 99 mean "No."

(d) Two digits simulate one person's answer; 00 to 62 mean "Yes" and 63 to 99 mean "No."

(e) There are 1.2 billion possible answers, which is too many to simulate.