6. Data show that 20% of all patients who make appointments at a primary-care clinic never show up. If in a given clinic session, 15 patients make appointments, a) What is the probability that at most 4 patients do not show up? b) What is the probability that all patients show up? c) How many patients would be expected to not show up? d) How many patients would be expected to show up? e) What is the probability that all patients show up if the true “no-show" percentage is 18%?

Q: need a fraction please

A: The original problem is related to a die is rolled two times.

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A:

Q: dx

A:

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A: