Question

3. In the city of Cape Coast, college graduates usually buy cars if the gas prices are less than $1.50 CAD/L at the year end. It is known that 50% of the college graduates in the city bought cars at the end of last year. Suppose a random sample of 40 college graduates is selected from the city of Cape Coast. (a) Verify the selection of 40 college graduates is an example of binomial experiment. [2 marks] (b) Describe the distribution for the proportion of college graduates in the sample that will buy a car at the cnd of this ycar. Justify your answer. 3 marks] (c) What is the probability that 22 or fewer of college graduates buy a car? 2 marks

Answer 1

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