The researcher hypothesized that undergraduate students and graduate students would spend different amounts of money on coffee each day. The researcher collected data from 120 students (60 undergraduates and 60 graduates). The mean spending for undergraduates was $4.50 with a standard deviation of $0.25. The mean spending for graduates was $5.50 with a standard deviation of $0.20. i. What components that increase power do you see? ii. What components that decrease power do you see? iii. Do you expect that the result will be significant (yes or no)?