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2. An employer pays a mean salary for a 5-day workweek of $1250 with a standard deviation of $129. On weekends, his salary expenses have

2. An employer pays a mean salary for a 5-day workweek of $1250 with a standard deviation of $129. On weekends, his salary expenses have a mean of $450 with a standard deviation of $57. What is the mean and standard deviation of his total weekly salaries? Show your work. (7 pts.)

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