need help on 23, 24, & 25 based on the information above. ASAP PLEASEEEE

Use the following scenario to answer questions 18-25; Battery life of MP3 players is of great concern to customers. A consumer group has tested four brands of such players to determine the battery life, Samples of players of each brand were fully charged and left to run at medium volume until the battery died. The number of hours that each player ran was recorded. The following graphs and tables from the analysis of the data are provided: 34 32 H 30 28- 26- 2 24- 23 20 18 16 Brand A Brand B Brand C Brand D Brands Means and Std Deviations Brand Number Mean Std Dev A 14 24.63 4.22 15 27.71 2.74 14 24.87 2.95 11 27.32 3.06 Analysis of Variance Source DF Sum of Squares Mean Square F Ratio P-value Brands 3 107.022 35.674 Error SO 543.273 10.865 Total 53 650.295 23. Let contrast - 3pp - HA - Rc - Ap. What is the sample contrast Ci.c. the estimate of the contrast v? A) -22.03 C) 6.31 BY -16.85 D) 11.67 Answer: 24. What is SEc i.e. the value of the standard error of the contrast v ? A) 3.01 C) 9.05 B) 2.74 D) 0.92 Answer: 25. What is a 95% confidence interval for the contrast y ? A) (-13.619, 26.239) B) (0.263, 12.357) C) (0.805, 11.814) D) (5.623, 17.717)