contestada

A lottery offers one $1000 prize, two $600 prizes, two $300 prizes, and five $200 prizes. One thousand tickets are sold at $7 each. Find the expectation if a person buys three tickets. Assume that the player's ticket is replaced after each draw and that the same ticket can win more than one prize. Round to two decimal places for currency problems.

Respuesta :

fichoh

Answer:

-$9.6

Step-by-step explanation:

X : ___ 1000 ____600 ____300 ___200

P(x): __ 1/1000 _ 2/1000 _ 2/1000 _ 5/1000

Expected winning per ticket :

Σ(X * p(X)) = [(1000 * 1/1000) + (600 * 2/1000) + (300 * 2/1000) + (200 * 5/1000) - price per ticket

= 1 + 1.2 + 0.6 + 1 - 7

= 3.8 - 7

= - $3.2

Expextwd winning if 3 tickets Is purchased :

3 * - 3.2= - $9.6

Otras preguntas