What is the least common multiple of 9 12 and 18

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

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.

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)