An employer pays a mean salary for a 5-day workweek of $ 1250 with a standard deviation

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An employer pays a mean salary for a 5-day workweek of $ 1250 with a standard deviation of $129. On the 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?
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Stats Data and Models

ISBN: 978-0321986498

4th edition

Authors: Richard D. De Veaux, Paul D. Velleman, David E. Bock

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