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17% of all Americans live in poverty. If 47 Americans are randomly selected, find the probability...

17% of all Americans live in poverty. If 47 Americans are randomly selected, find the probability that

a. Exactly 8 of them live in poverty.  
b. At most 8 of them live in poverty.  
c. At least 8 of them live in poverty.  
d. Between 8 and 15 (including 8 and 15) of them live in poverty.

Math   Statistics-And-Probability   
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  Note : all answers are rounded to 4 decimals.

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