A group of researchers wanted to investigate whether aromatherapy could improve performance on a cognitive task. They ha
Posted: Tue Jul 05, 2022 9:56 am
A group of researchers wanted to investigate whether aromatherapy could improve performance on a cognitive task. They had a sample of 17 participants complete the cognitive task before and after the administration of the aromatherapy. The alpha level is .05. The MD = 3.1 and the SSD = 120. What is the calculated test statistic, to the nearest thousandth? Make sure you put in the correct sign (+ or -).