.Forty-eight darts are thrown at a dartboard. The probability of hitting a bull's-eye is 0.4. Let X be the number of bull's-eyes hit. Calculate the standard deviation of the given random variable X. Round your answer to two decimal places.

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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18.Forty-eight darts are thrown at a dartboard. The probability of hitting a
bull's-eye is 0.4. Let X be the number of bull's-eyes hit. Calculate the
standard deviation of the given random variable X. Round your answer to
two decimal places.
Transcribed Image Text:18.Forty-eight darts are thrown at a dartboard. The probability of hitting a bull's-eye is 0.4. Let X be the number of bull's-eyes hit. Calculate the standard deviation of the given random variable X. Round your answer to two decimal places.
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