A cone has a volume of 602.88 cm3 and a radius of 8 cm. What is the height of the cone

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Asphere has a diameter of 10 in. what is the volume of the sphere?

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.