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Public Opinion reported that 5% of Bahir Dar city residents are afraid of being alone in a
house at night. If a random sample of 8 residents is selected, find these probabilities that
A. There are exactly 5 people in the sample who are afraid of being alone at night.
B. There are at most 3 people in the sample who are afraid of being alone at night.
C. There are at least 3 people in the sample who are afraid of being alone at night.
D. The expected number of residents in the sample who are afraid of being alone at night.
Sagot :
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