Sample Size Suppose you want to replicate this study at another hospital. The research question of interest is whether PHR users and non-users have different mean HbA1c values. You want to be 90% sure that you will find a difference in means like the difference found at the Cleveland Clinic using a two-tailed 5% significance level. Answer the following questions and include how you found the values. a. If you have equal subjects in each group, how many people are needed per group? b. If you expect to have a similar allocation ratio (n2/n1) of non-users to users as Cleveland Clinic has, how many people are needed in each group