I don't know how to input this in R, please help. Eleven children are given an arithmetic test. After three weeks of special tutorial they are given a further test of equal difficulty. Their grades in each test (out of 90) are given in the following table. Do these support a claim that the average improvement due to the extra tutorial is more than 5 points? Use the t-test and the Wilcoxon signed rank test. Between the two, which of the test is more appropriate for this data? Pupil 1 2 3 4 5 6 7 8 9 10 11 First Test 45 61 33 29 21 47 53 32 37 25 81 Second Test 53 67 47 34 31 49 62 51 48 29 86