11. Suppose you buy 1 ticket for $1 out of a lottery of 1,000 tickets where the prize for the one winning ticket is to be $500.

Question

3 years ago

15

What is your expected value?
-$0.50
-$1.00
-$0.40
$0.00

2 answers:

IrinaK [193] · Answer 1 · 2023-02-05T15:59:33+03:00

7 0

50 cents because the prize is half the number of tickets and 50 is half of the dollar

erastovalidia [21] · Answer 2 · 2023-02-05T14:39:38+03:00

6 0

Answer:

-50 cents

Step-by-step explanation:

The "Winnings" random variable has values -1 and 499

The associated probabilities are P(-1)= 999/1000; P(499)=1/1000

-----------------------------

Expected Value = -1(999/1000) + 499(1/1000) = -500/1000 = -50 cents