Some automobiles have five-button locks. to gain entry, push each of the five buttons, in a particular order to unlock the door. how many different five-digit sequences are possible

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.

Which point has an coordinates of (2,0) ? a

Which are the possible side lengths of a triangle?