4. Again, Nick is determined. He goes out and expands his sample and find a sample of 82 random stats students have an average age of 23.7 with a standard deviation of 1.23 years. Use a 0.05 significance 25 level to test the claim that the average age of his students is under (a) State your null and alternative hypotheses, also label the claim: Hou = 25 HAY