A community festival sells 20,000 raffle tickets for $10 each. There are 4 possible prize levels. The grand prize is a golf cart valued at $6,000. There are two winners of $1,000, three winners of $500, and ten winners of $100. What is the expected value of a raffle ticket?

Autility company burns coal to generate electricity. the cost c(p), (in dollars) of removing p percent of the some stack pollutants is given by c(p)= 85000p/100-p a) find the cost to remove 30% of the pollutant b) find where the function is undefined

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.