The furniture store is having a weekend sale on chairs. If you buy 2 chairs, then you can get a third chair for ¾ off of the regular price. Eric buys 3 chairs, each regularly priced at $128. After the discount, what is the price that Eric ended up paying for each chair? Show all of your work clearly. [4 points]

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.