Jump to level 1 A university claims that students can expect to spend a mean of 3 hours per week on homework for every credit hour of class. The administration believes that this number is no longer correct at a significance level of 0.05, and surveys a random sample of 300 students. The results of the sample are given below. Homework time Mean Variance 3.158191551 1.248743026 Observations 300 Hypothesized Mean 3 df 299 t Stat 2.451926089 P(T