Please answer all parts to the question below: **I will upvote**

Treatment of wastewater is important to reduce the concentration of undesirable pollutants. In order to compare two methods of water treatment, five specimens of waste water are treated using treatment 1 (T1), & another five specimens of waste water are treated using treatment 2 (T2). The belief is that the mean concentration is less for T2 compared to T1. Assume all normal distribution conditions. The benzene concentrations, in units of mg / L, for each specimen are as follows: T1: 7.8 7.6 5.6 6.8 6.4 T2: 7.3 6.5 4.1 5.9 4.7 Write out the 83% Confidence Interval for the difference associated with the means of this problem, the order being first T1 & then T2. Choose the closest correct answer. O A. (0.072, 2.208) O B. (0.5471, 1.7329) O C. (0.0585, 2.2215) O D. (0.7831, 1.4969) O E. None of the other answers are correct