t-test 5. At a local university, English instructors are supposed to grade essays in a class so that the average is exactly 75 points. When 22 random essays were drawn from a large English lecture,...

Please graph the answer (Solve p =, z =, etc)

Extracted text: t-test 5. At a local university, English instructors are supposed to grade essays in a class so that the average is exactly 75 points. When 22 random essays were drawn from a large English lecture, the average grade given was 79.1, with s = 6.5. Can we say that this professor is not grading according to the 75 point standard?