A clinical researcher predicts that a new therapy will reduce depression among patients The researcher knows that on average

Question

A clinical researcher predicts that a new therapy will reduce depression among patients The researcher knows that on average patients who receive the old therapy have a normal distribution of depression scores with average of 30 on the Beck Depression Inventory and a standard deviation of 4 In a very simple study the researcher randomly selects a depressed patient fromh a larger population and gives the patient the new therapy and then measures the patient s depression after the end of the therapy The patient receives a score of 23 What should the researcher conclude based on the results of a null hypothesis significance test using this sample of 1 person using the 5 steps of hypothesis testing with a one tailed 05 significance level Assuming that the analysis is performed correctly what is the appropriate interpretation of the results of the study The new therapy was effective the therapy reduced depression The new therapy was not effective the therapy did not change depression The new therapy was not effective the therapy increased depression The results of the study are inconclusive

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