Question

In a board game, when you land on a specific square, you must roll a die. If the result is an odd number, you receive four times the result, in dollars. If the result is even, you must pay five times the result, in dollars.

Determine the expectation.

a. 5 - 4
b. 4 x ( 1 + 3 + 5) x 1/2 - 5 ( 2 + 4 + 6) x 1/2
c. 0
d. 5 x 1/2 - 4 x 1/2

Answer 1

The answer is B

STEP BY STEP EXPLANATION BOIZ:

if its an odd number four times the result = 4 x (1 + 3 + 5)

If result is even you must pay five times the result = 5(2 + 4 + 6)

So 4 x (1 + 3 + 5) x 1/2 - 5(2+4+6) x 1/2 is the answer

Hope dis helped :3 o(*￣▽￣*)ブ

Answer 2

Option B is correct.

It represents exactly the expectation.

Hope this helps!

:)