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Mathematics, 26.03.2021 01:00 EricaCox1
Suppose 10 percent of households earn over 80.000 dollars a year, and 0.25 percent of households earn over 450,000. A random sample of 400 households has been chosen. In this sample, let X be the number of households that earn over 80,000, and let Y be the number of households that earn over 450,000. Use normal and Poisson approximation, whichever is appropriate in either case, to find the simplest estimates you can for the probabilities P(X 48) and P(Y 2).
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Suppose 10 percent of households earn over 80.000 dollars a year, and 0.25 percent of households ear...
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