how do you do longhand both .836 and -0.88182 were wrong

The table below shows the number of hours per day 11 patients suffered from headaches before and after 7 weeks of soft tissue therapy. At @ = 0.01, is there enough evidence to conclude that soft tissue therapy helps to reduce the length of time patients suffer from headaches? Assume the samples are random and dependent, and the population is normally distributed. Complete parts (a) through (f). Patient 1 2 3 4 5 6 7 8 9 10 11 0 Daily headache hours (before) 2.5 3.7 3.6 4.2 3.8 2.3 3.7 3.9 3.1 2.8 1.6 Daily headache hours (after) 1.9 2.9 1.8 3.5 3.1 1.6 24 3.2 2.3 1.6 1.1 Identify the rejection region(s). Choose the correct answer below. O A. t 2.764 O B. t 3.169 D. t> 2.764 (c) Calculate d. = .836 (Type an integer or a decimal. Round to three decimal places as needed.)