Rahul received a score of 79 on a history test for which the class mean was 70 with a standard deviation of 9. he received a score of 78 on a biology test for which the class means was 70 with a standard deviation of 3. on which test did he do better relative to the rest of the class?

select one:

Biology test

history test

the same

solve the question by choosing the correct answer and well-detailed proper explanation so that I can understand the concept, please...! It is important for me please...!