Dr. Rogers is disappointed that she did not find a significant difference in outcomes between the treatment and control groups. She seeks the advice of her statistician who indicates that her study is likely under-powered. Which of the following protocol revisions would improve the chance of finding a significant difference between the groups in a future study? Dr. Rogers is disappointed that she did not find a significant difference in outcomes between the treatment and control groups. She seeks the advice of her statistician who indicates that her study is likely under-powered. Which of the following protocol revisions would improve the chance of finding a significant difference between the groups in a future study? Increase sample size. Decrease the effect size. Lower the alpha or significance level (make it smaller). None of these revisions are correct