Due tonight for the slope, i got: y = 1.1111x + -4.8889 by using points (62, 64) and (71, 74) 1. what does the slope of the line represent within the context of your graph? what does the y-intercept represent? 2. test the residuals of two other points to determine how well the line of best fit models the data.

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.