6. A medical student is investigating two different methods, A and B , of measuring a patient's blood pressure. He believes that Method B gives, on average, a higher reading than Method A so he defines the following hypotheses.
\(H _ { 0 }\) : There is on average no difference in the readings obtained using Methods A and B;
\(H _ { 1 }\) : The reading obtained using Method B is on average higher than the reading obtained using Method A. He selects 10 patients at random and he measures their blood pressures using both methods. He obtains the following results.

1. Carry out an appropriate Wilcoxon signed rank test on this data set, using a 5\% significance level.
2. State what conclusion the medical student should reach, justifying your answer.