What is probability that 100 randomly selected households

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There has been much talk about income inequality in the United States lately. Let's assume that the average household income in the U.S. is $48,000 with a standard deviation of $18,000 (these numbers are hypothetical).

a) What is the probability that 50 randomly selected households have an average household income that exceeds $50,000? Explain how you approached this question.

b) What is the probability that 100 randomly selected households have an average household income that exceeds $50,000?

c) Why are your answers to a) and b) different? Explain.

Reference no: EM132849173

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