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Suppose that 24% of U.S. residents are fluent in a language other than English. Let X...

Suppose that 24% of U.S. residents are fluent in a language other than English. Let X represent the number of people in a SRS of 12 U.S. residents who are fluent in another language.

a) What distribution will X have? (Give the name of this type of distribution.)

b) Find the mean and standard deviation of the distribution of X.

c) Calculate the probability that a random sample of 12 U.S. residents contains fewer than 3 who are fluent in a language other than English.

Math   Statistics-And-Probability   
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