Scientists who study atlantic salmon have found that the oxygen consumption of a yearling salmon o is given by the function o=100. 3^(3s/5) , where s is the speed that the fish is traveling in feet per second
a) what is the oxygen consumption of a fish that is traveling at 5 feet per second ?
b) if a fish has traveled 4.2 miles in an hour. what is its oxygen consumption

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.