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30% of people between 60-70 years old will have at least one visit to a health...

30% of people between 60-70 years old will have at least one visit to a health provider. This proportion will be 5% for people between 10-20 years old, and it will be 15% for kids between 5-10 years old. If we randomly select 75 of people in the age range of 60-70, then answer the following questions:

1 What is the expected number of those who will visit a health provider?

2 What is the probability that at least 15 people will visit a health provider?

Math   Statistics-And-Probability   
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