A New Surgical Procedure Is Said to Be Successful 90

Short Answer

A new surgical procedure is said to be successful 90% of the time. Suppose the operation is performed five times and the results are assumed to be independent of one another. Find the probabilities listed below:
Define x to be the number of successful operations. Then p = P(success) = 0.9 and n = 5. We will use the binomial formula. However, you may also use the cumulative binomial probabilities table in Appendix I of your book to calculate the necessary probabilities.
All five operations are successful.
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Exactly four are successful.
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Less than two are successful.
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