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SusanAthena, Master's Degree

Category: Calculus and Above

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Experience: Tutor for Algebra, Geometry, Statistics. Explaining math in plain English.

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Forty-five percent of households say they would feel secure

Customer Question

Forty-five percent of households say they would feel secure if they had $50,000 in savings. You randomly select 88 households and ask them if they would feel secure if they had $50,000 in savings. Find the probability that the number that say they would feel secure is (a) exactly five, (b) more than five, and (c) at most five.

ok, by the way, may I kindly ask, why you gave me a negative rating a while ago for the answers and solution I posted? (I am 100% sure they are all correct, so why the negative rating instead of positive rating?)