Question

In a recent survey, 48% indicated chocolate was their favorite flavour of ice cream. Suppose that we select a sample of 17 people and ask them to name their favourite flavour of ice cream. a. How many of those in the sample would you expect to name chocolate? (Round the final answer to 2 decimal place.) Probability b. What is the probability exactly eleven of those in the sample name chocolate? (Do not round the intermediate values. Round the final answer to 4 decimal places.) Probability c. What is the probability eleven or more name chocolate? (Do not round the intermediate values. Round the final answer to 4 decimal places.)

Answer 1

Part a)  

E(X) = n * P = 17 * 0.48 = 8.16   8 people

Part b)

Part c)

P ( X >= 11 ) = 0.1280