4 1 point Question at position 4 Residuals must be ________ in order for the assumptions of linear regression to be met. Residuals must be ________ in order for the assumptions of linear regression to be met. bimodal log transformed independent dependent Question at position 5 5 1 point Question at position 5 A researcher wants to know if cholesterol levels are lower in vegetarians or nonvegetarians. Which statistical test would be most appropriate for this data? A researcher wants to know if cholesterol levels are lower in vegetarians or nonvegetarians. Which statistical test would be most appropriate for this data? Chi-square Inter-rater reliability One sample t-test Independent samples t-test Question at position 6 6 1 point Question at position 6 The degrees of freedom for a test statistic for a linear regression slope are calculated as follows: The degrees of freedom for a test statistic for a linear regression slope are calculated as follows: # of predictors n n - # of predictors n - 1 - # of predictors Question at position 7 7 1 point Question at position 7 For a regression slope, the estimate is .50 and the standard error is .25, the test statistic for