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 a = 0.01, is there enough evidence to patients suffer from headaches? Assume the samples are random and dependent, and the population is normally distributed. Complete parts (a) through (f). Patient 1 N 4 LO 7 8 9 10 11 Daily headache hours (before) 3.3 4.5 3.6 3.9 2.3 3.2 2.1 1.9 1.7 3.4 3.4 Daily headache hours (after) 2.7 5.2 2.3 2.1 1.2 1.4 1.9 1.6 1.2 3.0 4.0 (c) Calculate d. d =0 (Type an integer or a decimal. Round to three decimal places as needed.) Calculate Sd. Sd = 0 (Type an integer or a decimal. Round to three decimal places as needed.) (d) Use the t-test to find the standardized test statistic t. (Type an integer or a decimal. Round to three decimal places as needed.) (e) Decide whether to reject or fail to reject the null hypothesis. Choose the correct answer below. O Fail to reject the null hypothesis. O Reject the null hypothesis. (f) Interpret the decision in the context of the original claim. Choose the correct answer below. O A. At the 1% significance level, there is not enough evidence that soft tissue therapy helps to reduce the length of time patients suffer from headaches. O B. Soft tissue therapy increases the length of time patients suffer from headaches. O C. The sample was not large enough to make a conclusion. O D. At the 1% significance level, there is enough evidence that soft tissue therapy helps to reduce the length of time patients suffer from headaches. Click to select your answer (s)