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Assume that 6% of Americans are afraid of being alone in a house at night. If a random sample of 20 Americans is selected, find

Assume that 6% of Americans are afraid of being alone in a house at night. If a random sample

of 20 Americans is selected, find these probabilities.

(a) There are exactly 5 people in the sample who are afraid of being alone at night.

(b) There are at least 3 people in the sample who are afraid of being alone at night.

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