Enter an equation for the word sentence. Use the variable c for the cost. Three times the cost is $18.

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.

The percent of change from 12 to 15

Erik needs to order 30 t-shirts for his club. which company should bill choose to spend the least amount of money? use math to justify your recommendation.