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.

Question

30-06-2024
Mathematics

Answered

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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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