This one of the last questions I need please help!

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.

Find │7│. a. 1 over 7 b. –7 c. 7 asap i always mark brailiest who me so

Once george got to know adam, they found that they really liked each other. this is an example of what factor in friendship