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Suppose that 60% of students live in AnyTown. Find the probability that:
Round to three decimals.
A) Exactly 5 out of 10 randomly chosen students live in AnyTown
B) More than 5 students out of 10 live in AnyTown
C) The first AnyTown resident you find is the 5th person you ask

Sagot :

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Answer:

Step-by-step explanation:

A.

5 chose 10 = 10*9*8*7*6/1/2/3/4/5 = 252

252 * (0.6)^5 * (0.4)^5 = 0.201

B.

6C10 * (0.6)^6 * (0.4)^4 + ... 10C10(0.6)^10 = 0.633

C.

(0.4)^4*0.6 = 0.015

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