Can you solve it step by step and explain also thank you!!

4) According to the norms established for a reading comprehension test, the scores of fifth graders should be normally distributed with a population mean of 81.4 and a population standard deviation of 8.4. A teacher believes her class of 35 students have a reading comprehension different than the norm, and decides to give her class the test. The class average on the test was 79.5. Are these students different than the norm in their reading comprehension? Test at 0 = 0.01. Show all steps to receive full credit