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1.A new drug for diabetes has a success rate of 80% and an internist in charge of occupants in a senior home .decided to use

1.A new drug for diabetes has a success rate of 80% and an internist in charge of occupants in a senior home .decided to use it on her25 diabetic patientsAssuming that probability of drug's success does not change.

a.What is the expected number of diabetic seniors who benefitted from this drug?

b.What is the variance of the distribution?

c.What is the probability that at least 10 diabetic seniors will be benefit from the drug?

d.What is the probability that no diabetic seniors will benefit from the drug?

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