Linear regression C. A cognitive psychologist believes that a particular drug improves short-term memory. An experiment is conducted in which 8 randomly selected participants are given the drug and then given a short time to memorize a list of 10 words. Participants are then tested for retention 15 minutes after the memorization period. The number of words correctly recalled by each participant is as follows: 8, 9, 10, 6, 8, 7, 9, 7 . Over the past few years, the psychologist has collected a lot of data using this task with similar participants, and the average word correctly recalled was 6 words and the standard deviation is 2. Answer the below questions using a =0.051 tail What is the alternative hypothesis? Drug does improve short-terr What is the null hypothesis? Drug does not improve short- v What inferential test is being conducted? single sample t test What is the obtained statistic? [ Select ] What is the critical value? [ Select ] What is your decision? reject the null hypothesis What is your conclusion? We conclude that the drug do