The organizers of a convention are drawing lots to pick the host city for the event. Nine city names are written on different pieces of paper and placed in a bowl. The possible outcomes of drawing a name from the bowl are shown below.
Chicago
Seattle
Orlando
Dallas
Atlanta
Austin
Oakland
Phoenix
Cleveland
What is the probability that Cleveland or Dallas is picked?
OA.
OB.
OC.
DIN COIN
OD

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.