The function f is given by the table of values as shown below.
X12345
f(x) 9 11 15 23 39
Use the given table to complete the statements.
The parent function of the function represented
in the table is
If function f was translated up 5 units, the
-values would be
A point in the table for the transformed function
would be

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.