Simulate Chance Events

Find the probability that a driver was not wearing a seatbelt and injured. *Do not round answers*

Find the probability that a driver was injured. *Do not round answers*

Find the probability that a driver was ok. *Do not round answers*

Dr. Stats plans to toss a fair coin 10,000 times in the hope that it will lead him to a deeper understanding of the laws of probability.

Which of the following statements is true?

• It is unlikely that Dr. Stats will get more than 5000 heads.

• Whenever Dr. Stats gets a string of 15 tails in a row, it becomes more likely that the next toss will be a head.

• The fraction of tosses resulting in heads should be exactly 1/2.

• The chance that the 100th toss will be a head depends somewhat on the results of the first 99 tosses.

• It is likely that Dr. Stats will get about 50% heads.

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 adult 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:

• One digit simulates one person’s answer; odd means “Yes” and even means “No.”

• One digit simulates one person’s answer; 0 to 6 mean “Yes” and 7 to 9 mean “No. ”

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

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

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

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