Answer: 89 to 99
Step-by-step explanation:
We know that the range of data is given by :-
[tex]\overline{x}\pm E[/tex], where [tex]\overline{x}[/tex] ios the average of data and E is the margin of error.
Given : Margin of error = [tex]\pm 5[/tex]
Class average = [tex]94[/tex]
Then, the range of grades on the test will be :-
[tex]94\pm 5=(94-5,\ 94+5)=(89,\ 99)[/tex]
Hence, the range of grades on the test = 89 to 99
