The volume of the prism shown is 72 inches cubed. A rectangular prism with a length of 4 inches, width of 3 inches, and height of 6 inches. What is the volume of a pyramid with the same base length, base width, and height? 24 inches cubed 36 inches cubed 72 inches cubed 216 inches cubed

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.