It has been reported that 73% of federal government employees use e-mail. If a sample of 225 federal government employees is selected, find the mean, variance, and standard deviation of the number who use e-mail. Round your answers to three decimal places.

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Q: Given that the mean of a data set is 20, and the standard deviation of this data set is 8, then what…

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A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

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Q: What does the standard deviation tell you about a set of data?

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A: Formula for Median If mean and mode are given  Median = ( Mode + 2 * Mean ) / 3