Which of the following could be the equation of the function below? y=0.5cos(2(x-pi/2))+2 y=0.5cos(4(pi/2))-2 y=0.5cos(4(x+pi))+2 y=0.5cos(2(x-pi))-2

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.

The radius of a sphere is 3 inches. which represents the volume of the sphere?

Question 14 (1 point) larry deposits $15 a week into a savings account. his balance in his savings account grows by a constant percent rate.