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.

The mean is= 3.158191551, variance is = 1.248743026, observations= 300, hypothesized mean=3, df=299, t stat= 2.451926089, P(T<=t) one-tail=0.007390564, t Critical one-tail= 1.649965767, P(T<=t) two-tail 0.014781127, t Critical two -tail= 1.967929669.

What's the population parameter ? what's the sample statistic ? Does the data meet the following conditions for the t

-distribution? Randomness? Normality?