# Probability calculation :Binomial distribution

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Approximately 25% of the population belongs to a health maintenance organization (HMO). Assume that for a randomly selected group of 20 adults, the number belonging to an HMO has a binomial distribution.

The probability of finding exactly 5 in the 20 who belong to an HMO is....

The probability of finding at least one in the 20 who belongs to an HMO is...

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#### Solution Summary

The solution provides step by step method for the calculation of probability based on binomial distribution . Formula for the calculation and Interpretations of the results are also included.

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