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	$3000$	$0.2$
wet, warm	$25000$	$0.2$
dry, cold	$15000$	$0.1$
dry, warm	$55000$	$0.5$

(a) What is the expected attendance?

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(b) If tickets cost $ 25 each, the band will cost $ 200000, plus $ 50000 for administration. What is the expected profit?

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