I would like some assistance with the following inference question

A large marketing company wants to evaluate its training programme for new associates. The training manager suspects that the average score on a product knowledge test for their new associates is 64%. After a training session a product knowledge test is given. Grades are taken from a sample of 85 students, and the mean is found to be 83%. It is known that the standard deviation of grades is 8.1. Conduct a test at the 1% level of signicance ifthe training manager's claim is understated. What are the null and alternative hypotheses for this scenario? Select the correct symbols and values to complete the hypothesis. H0: p-hat v