Univision (the Spanish language broadcast television network)is planning its advertising stratregy for the Copa America CentenarioUSA 2016 , the 100

Univision (the Spanish language broadcast television network) is planning its advertising stratregy for the Copa America Centenario USA 2016, the 100 years Anniversary Americas soccer competition held this year in ten cities across the US during the month of June.  The network plans to have ten 30-sec advertising slots during each match. 

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1. What is the revenue Univision will make during the final if the network sells all  slots in advance?
2. How many slots should be sold in advance for the final if the station manager wants to maximize the average revenue ? (Hint: try each value and pick the one that yields the highest mean revenue)
3. Construct a confidence interval for the average revenue corresponding to the number of advertising slots sold in advance, as chosen in (b).

[1] Prices for these events are completely crazy, don't you think ??