A high school teacher was interested in whether there was a difference between tenth graders and twelfthgradersin the number of hours they spend on TikTok. He randomly selected 15 tenth gradersand 15twelfth gradersand asked them how many hours a week they spent on TikTok. Tenth gradersreported they spent, on average, 6.2 hours per week; twelfth gradersreported they spent 5.0hours per week. Use this data to answer questions a-c to determine the power of this study:

a) If sp= 1.4, calculate g (the sample estimate of d) (1 pt).

b) What size effect is this (small, medium or large)? (1 pt)

c) Calculate ?. (2 pts)

d)If ? = .05, two-tailed, what is the power of this study? (1 pt)

A high school teacher was interested in whether there was a difference between tenth graders and twelfth graders in the number of hours they spend on TikTok. He randomly selected 15 tenth graders and 15 twelfth graders and asked them how many hours a week they spent on TikTok. Tenth graders reported they spent, on average, 6.2 hours per week; twelfth graders reported they spent 5.0 hours per week. Use this data to answer questions a-c to determine the power of this study: a) If sp = 1.4, calculate g (the sample estimate of d) (1 pt). b) What size effect is this (small, medium or large)? (1 pt) c) Calculate 6. (2 pts) d) If a = .05, twotailed, what is the power of this study? (1 pt)