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Suppose that 80% of North American airline passengers carry a smartphone with them when they travel. Let S represent the number of randomly selected North

Suppose that 80% of North American airline passengers carry a smartphone with them when they travel. Let S represent the number of randomly selected North American airline passengers surveyed to find someone who travels with a smartphone.

Calculate and interpret the mean and standard deviation of S.

Show work for your calculations. Please start each interpretation on a new line.

Additional Information: Review calculating and interpreting mean & S.D. for geometric random variables

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