More than 200,000 people worldwide take the gmat examination each year as they apply for mba programs. their scores vary normally with mean about u= 525 and standard deviation about sigma= 100. one hundred students go through a rigorous training program designed to raise their gmat scores. test the hypotheses. h sub 0: u= 525. h sub a: u > 525

answer the following question based from the given stated.
a) the students' score is x = 541.4. is this result significant at the 5% level? b) the average score is x = 541.5. is this result significant at the 5% level? c) what conclusions may you draw by comparing the answers to parts a and b?