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Unformatted text preview: CLASS ACTIVITIES FOR CHAPTER 3 Activity 1 – A Door Prize A party host gives a door prize to one guess chosen at random. There are 48 men and 42 women at the party. What is the probability that the prize goes to a woman? Explain how you arrived at your answer. Activity 2 – Land in Canada Canada’s national statistics agency, statistics Canada, says that the land area of Canada is 9,094,000 square kilometers. Of this land, 4,176,000 square kilometers are forested. Choose a square kilometer of land in Canada at random. (a) What is the probability that the area you choose is forested. (b) What is the probability that it is not forested? Activity 3 – Car Colors Choose a new car or light truck at random and note its color. Here are the proba bilities of the most popular colors for vehicles made in North America in 2005. Color Silver White Gray Blue Black Red Probability 0.18 0.17 0.15 0.12 0.11 0.11 (a) What is the probability that the vehicle you choose has any color other than the six listed? (b) What is the probability that a randomly chosen vehicle is neither silver nor white? 1 Activity 4  Genetics A gene is composed of two alleles. An allele can be either dominant or recessive. Suppose a husband and wife, who are both carriers of the sicklecell anemia allele but do not have the disease, decide to have a child. Because both parents are carriers of the disease, each has one dominant normalcell allele and one recessive sicklecell allele. Therefore, the genotype of each parent is Ss. Each parent contributes one allele to his offspring, with each allele being equally likely. (a) List the possible genotypes of their offspring. (b) What is the probability that the offspring will have sicklecell anemia? In other words, what is the probability the offspring will have genotype ss? Interpret the probability. (c) What is the probability that the offspring will not have sicklecell anemia but will be a career? In other words, what is the probability that the offspring will have one dominant normalcell allele and one recessive sicklecell allele? Interpret this probability. Activity 5  Birthdays Exclude leap years from the following calculations and assume each birthday is equally likely: (a) Determine the probability that a randomly selected person has a birthday on the 1st day of a month. Interpret this probability. (b) Determine the probability that a randomly selected person has a birthday on the 31st day of a month. Interpret this probability. (c) Determine the probability that a randomly selected person was born in De cember. Interpret this probability. (d) Determine the probability that a randomly selected person has a birthday on November 8. Interpret this probability....
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 Spring '09
 LEI

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