4-83. A restaurant has three sources of revenue: eat-in orders,

483. 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. Mean Standard Deviation Eat in $5,780 $142 Takeout 641 78 Bar 712 72 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?