Question

Tickets for a raffle cosr $$8. There were 842 tickets sold. One ticket will be randomly selected as the winner, and that person wins $$1900 and also the person is given back the cost of the ticket. For someone who buys a ticket, what is the Expected Value (the mean of the distribution)?
If the Expected Value is negative, be sure to include the "-" sign with the answer. Express the answer rounded to two decimal places.
Expected Value = $____________

A bag contains 1 gold marbles, 8 silver marbles, and 21 black marbles. Someone offers to play this game: You randomly select one marble from the bag. If it is gold, you win $4. If it is silver, you win $2. If it is black, you lose $1.
What is your expected value if you play this game?

A poll is given, showing 30% are in favor of a new building project.
If 2 people are chosen at random, what is the probability that exactly 1 of them favor the new building project?0.294Incorrect  

Answer 1

thank you

please upvote