Type the correct answer in each box. Shania is planning a party at her home. She has made 126 chocolate truffles and 84 caramel truffles to give to her guests. If there are 21 guests and she divides both types of truffles equally among them, then each guest will get chocolate truffles and caramel truffles.

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.