At the Royal Dragon Chinese restaurant a slip in the fortune

At the Royal Dragon Chinese restaurant, a slip in the fortune cookies indicates a dollar amount that will be subtracted from your total bill. A bag of 10 fortune cookies is given to you from which you will select one. If five fortune cookies contain \"$1 off, \" four contain \"$3 off, \" and one contains \"$4off, \" determine the expectation of a selection. dollars off (Round to the nearest cent.)

Solution

n

rupees (x)

p

p.x

5

1

0.5

0.5

4

3

0.4

1.2

1

4

0.1

0.4

Total

2.1

Expected Value = 2.10

n	rupees (x)	p	p.x
5	1	0.5	0.5
4	3	0.4	1.2
1	4	0.1	0.4
		Total	2.1