(1 point) A rock concert producer has scheduled an outdoor concert. The producer estimates the attendance will depend on the weather according to the following table.

Weather	Attendance	Probability
wet, cold	50005000	0.20.2
wet, warm	1500015000	0.10.1
dry, cold	2000020000	0.20.2
dry, warm	4000040000	0.50.5

(a) What is the expected attendance?

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What is the variance in attendance?

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What is the standard deviation in attendance?

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(b) If tickets cost $ 30 each and if band and administration costs are $ 300000, what is the expected profit?

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What is the variance in profit?

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What is the standard deviation in profit?

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