Probability Unit Assignment.docx - Probability Unit Assignment 1 During a recent survey of ethnic backgrounds of 1000 people in a large city 513 were

# Probability Unit Assignment.docx - Probability Unit...

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Probability Unit Assignment 1. During a recent survey of ethnic backgrounds of 1000 people in a large city, 513 were Canada, 148 were French, 72 were African, 56 were Asian and the remainder were from other groups Calculate the probability that a person, selected at random from the population has: a. a Canadian background? b. an African background? c. an “other” background? First in order to do this question we need to find out this first: Total number of people = 1000 - Canadian= 513 - French = 148 - African = 72 - Asian = 56 Other groups=1000 – (513+148+72+56) = 211 Probability = numberof favorableoutcomes Total number of possible outcomes a. P(Canadian Background) = 513/1000 =0.153 They are about 15.3% people chosen with a Canadian Background. b. P(African Background) = 72/1000 = 0.072 They are about 7.2% people chosen with a African Background. c. P(Other groups background) = 211/1000 =0.211 They are about 21.1% people chosen with an “other group background”. 2. A spinner is divided into three equally sized regions as shown. The spinner is
spun twice. For each probability you determine, express your answer as a fraction, decimal and percent. a. What is the probability of spinning A on the first spin? b. Draw a tree diagram to represent the sample space for both spins.

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• Spring '17
• Dice, Three-point field goal, African Background, ncx p, Probability Unit Assignment, Canadian Background

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