What would the mean and the variance equal

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Measured the tail lengths of 250 cats, and found that the average length is 28 cm and the variance is 75 cm². If these tail lengths are normally distributed, (A) what would the mean and the variance equal if we multiplied each tail length by three? (B) What would the mean and variance equal if we added 10 cm to the length of each tail measurement?

Reference no: EM13839308

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