A claim was made that the average score on the ACT test at J

A claim was made that the average score on the A.C.T. test at Jefferson College was 19, with a standard deviation of 3. A sample of 81 students had an average score of 17.8. What is the alternative hypothesis for this data?

Under Null, the average score on the A.C.T. test at Jefferson College was 19, Ho U: = 18

Alternative, the average score on the A.C.T. test at Jefferson College was diffrent from19, H1 U: != 18