A recommendation for the amount of vitamin C that a person should have per day is 75 mg. A researcher believes that the mean dosage per day among vegetarians is greater than 75 and decides to test...

A recommendation for the amount of vitamin C that a person should have
per day is 75 mg. A researcher believes that the mean dosage per day
among vegetarians is greater than 75 and decides to test this claim by
randomly sampling 120 vegetarians and computing the mean for the
sample.
a. State hypotheses to be tested (there should be two).

b. Is this test right-tailed, left-tailed, or two tailed?