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It is known that a certain lacrosse goalie will successfully make a save 85.06% of the time. Suppose that the lacrosse goalie attempts to make 13 saves. What is the probability that the lacrosse goalie will make at least 11 saves?

Let X be the random variable which denotes the number of saves that are made by the lacrosse goalie. Find the expected value and standard deviation of the random variable.

E(X)=

σ=

Please show me how to get the answer.

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