The effectiveness of two speed reading programs is being compared. Ten pairs of people are randomly selected; each pairs consists of people whose present reading speeds are essentially identical.

Which table shows a proportional relationship between miles traveled and gas used?

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.

Consider the following function. which of the following graphs corresponds to the given function? w. x. y. z. a. z b. y c. x d.