The first-, and second-year enrollment values for a technical school are shown in the table below:

Enrollment at a Technical School
Year (x)
First Year f(x)
Second Year t(x)
2009
756
756
2010
785
740
2011
710
781
2012
732
710
2013
755
800

Which of the following statements is true based on the data in the table?

The solution to s(x) = t(x) is x = 781.
The solution to s(x) = t(x) is x = 2011.
The solution to s(x) = t(x) is x = 756.
The solution to s(x) = t(x) is x = 2009.

Which of the following is an equation of a line parallel to the equation y=4x+1?

Solve the triangle. a = 21°, c = 105°, c = 5

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.