Which statement is true? CLEAR CHECK
(A)All rational numbers are integers.
(B)All whole numbers are integers.
(C)All integers are whole numbers.
(D)All rational numbers are whole numbers

X2 + y 2 = 36 x + y = 6 solve the system of equations.

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.

Afair die is cast four times. calculate the probability of obtaining exactly two 6's round to the nearest tenth of a percent