Increased blood vessel formulation is a predictive factor in survival for a certain disease. One treatment is stem cell transplantation with the patient's own stem cells. The accompanying data table represents the microvessel density for pati taken immediately prior to the stem cell transplant and at the time the complete response was determined. Complete parts (a) through (d) below. Click the icon to view the data table. a. At the 0.10 level of significance, is there evidence that the mean microvessel density is higher before the stem cell transplant than after the stem cell transplant? Let u, be the mean density before the transplant and let u, be the mean density after the transplant. State the null and alternative hypotheses. Choose the correct answer below. O A. Ho: HD 0 O C. Ho: HD > 0 (where HD = #1 - H2) O D. Ho: HD = 0 (where HD = #1 - H2) H1 : HD SO O E. Ho: HD #0 (where HD = H1 - H2) X Patient Data (12) H1 : HD = 0 The test statistic is tSTAT = 1.62 . Patient Before After (Round to two decimal places as needed.) 170 326 199 100 242 264 The p-value is .078 JOUAWN 389 286 (Round to three decimal places as needed.) 377 239 430 167 Since the p-value is less than the value of a, reject Ho- There is sufficient evidence to conclude that the mean 410 257 he stem cell transplant. b. Interpret the meaning of the p-value in (a). Choose the correct answer below. O A. The p-value is the probability of not rejecting the null hypothesis when it is false. Print Done O B. The p-value is the probability of obtaining a sample mean difference of less than or equal to the sample mean differenc transplant are the same. C. The p-value is the probability of obtaining a sample mean difference of greater than or equal to the sample mean differe the transplant are the same. O D. The p-value is the probability of rejecting the null hypothesis when it is true. c. Construct and interpret a 90% confidence interval estimate of the mean difference in microvessel density before and after the stem cell transplant. SHD =0 (Round to one decimal place as needed.)