Your math class is collecting canned food for a local food drive. The goal is to collect at least 155 cans but no more than 245 cans due to space limitations. There are 30 students in your math class and your teacher has promised to bring in 5 cans. Select which inequalities represent the possible numbers n of cans that each student should bring in. 155 < n < 245 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.