For 6z=126, Chris wrote that z=756. Explain what Mike’s mistake was. Then tell the correct answer.

Fractions can be added and subtracted only if they're fractions. a. like b. proper c. improper d. unlike

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.

Two consecutive negative integers have a product of 30. what are the integers?