If you were conducting a research study, and you wanted to ensure your sample size was not too small, how would you calculate the sample size? You know you want to ensure that you have 80% to detect a difference in 3 lbs in weight loss among participants. You also know that a two sided test will be used with a 5% level of significance. The standard deviation is 9.1. The effect size= 0.33. How would you calculate the sample size