Research question: Is the average cost of textbooks for a course greater than $100? Data were collected from a representative sample of 40 courses at one university. The cost of books for each course was recorded. Statistical software was used to conduct a one sample mean t test: 1-Sample t: Cost Descriptive Statistics N Mean StDev SE Mean 40 126.000 55.963 8.849 : mean of Cost Test T-Value = 2.94 P-Value = 0.0028 At the 0.05 alpha level we should [ Select ] the null hypothesis. There [ Select ] that the mean cost of books per course is greater than $100