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70% of all Americans live in cities with population greater than 100,000 people. If 34 Americans...

70% of all Americans live in cities with population greater than 100,000 people. If 34 Americans are randomly selected, find the following probabilities. Round your answers to 4 decimal places.

a. Exactly 24 of them live in cities with population greater than 100,000 people.
b. At most 23 of them live in cities with population greater than 100,000 people.
c. At least 23 of them live in cities with population greater than 100,000 people.
d. Between 20 and 27 (including 20 and 27) of them live in cities with population greater than 100,000 people.

Math   Statistics-And-Probability   
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