A horse trainer teaches horses to jump by using two methods of instruction. Horses being taught by method A have a lead horse that accompanies each jump. Horses being taught by method B have no lead horse. The table shows the number of training sessions required before each horse performed the jumps properly. Method A 26 22 48 30 . 38 21 Method B 42 24 47 43 36 45 Method A 46 25 28 32 35 50 Method B 27 44 40 33 41 Use a rank-sum test with a 9% level of significance to test the claim that there is no difference between the training sessions distributions. If the value of the sample test statistic R, the rank-sum, is 151, calculate the P- value