Which of the following is a point on the graph of

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.

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.