A restaurant has three sources of revenue: eat-in orders, takeout orders, and the bar. The daily revenue from each source is normally distributed with mean and standard deviation shown in the table below.

a. Will the total revenue on a day be normally distributed?
b. What are the mean and standard deviation of the total revenue on a particular day?
c. What is the probability that the revenue will exceed $7,000 on a particular day?

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Mean $5,780 641 712 Standard Devlation Eat in Takeout Bar $142 78 72