The number of observations minus the number of assumptions necessary to calculate a statistic equals: 13 a. b. c. d. e. the Z score ANOVA random variation degrees of freedom correlation analysis Al 14. If statistically significant differences between two groups being compared exist, we can: a. Accept the null hypothesis b. Accept the alternative hypothesis c Reject the alternative hypothesis d. None of the above In a beer consumption study, per week than females; this can be stated in a: 15 a researcher makes an assumption that males will consume more beer a. research objective b. given level of significance c. hypothesis d. theory e. rule 16. What must we do if a population CAN NOT be assumed normal? use smaller samples or parametric techniques a. b. use larger samples or nonparametric techniques c use smaller samples or nonparametric techniques d. use larger samples or parametric techniques 17. What does a line with a positive relationship look like? a. Horizontal b. Vertical c. Upward sloping d. Down sloping