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There is a certain disease in America which is very rare. The probability of a person having the disease is 1 in 100,000,000. Assume that there are 310,000,000 people in the US.
a) Approximate the probability that no one in the US actually has the disease.
b) Approximate the probability that at most 3 people in the US have the disease.
When water taxi sank in the Baltimore Inner Harbor, an investigation revealed that the safe passenger load for water taxi was 3500 lbs. It was also noted that the mean weight of passenger was assumed to be 140 lbs.
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