One subject at KBS suggests that students should study an average of 3 hours per week outside of class time. A student claims that the average time needed to study is more than this. He took a random sample of 25 students and found a mean of 3.5 hours. Assume the population standard deviation is 1.2 hours per week. You are told that the conditions are satised and do not need to be checked here. a] Give the null and alternative hypotheses to test the student's claim. b} Give the calculated test statistic. :1 Give the critical value if testing at the 1% level of signicance. c] State your decision and your conclusion in the context of this question. e] Explain a Type II error in the context of this