In a previous study, a researcher was evaluating the assertion of a drug company that its course of… Show more In a previous study, a researcher was evaluating the assertion of a drug company that its course of treatment will, on average, reduce a person’s cholestrol level by 0.8 mmol/L. Explain whether he might have been justified in performing one-sided tests in cases (a) – (c), and determine whether his conclusions would have been different. (a) A mean increase of 0.6 units, with standard error 0.2 units; (b) A mean decrease of 0.4 units, with standard error 0.2 units; (c) A mean increase of 0.4 units, with standard error 0.2 units • Show less