A random sample of 18 uses hospitalized for multiple trauma were obtained. The variance for these data is 28.79 and the value of b is 21.768. Using the Shapiro-Wilk test, we want to test the hypothesis of normality of time at the 2% significance level. What is the critical value of W?

Table A7. Table Shapiro-Wilk Valeurs critiques pour la statistique W n \\ Seuil% 1% 2% 5% 10% 50% 0,753 0,756 0,767 0,789 0,959 0,687 0,707 0,748 0,792 0,935 0,686 0,715 0,762. 0,806 0,927 0,713 0,743 0,788 0,826 0,927 0,730 0,760 0,803 0,838 0,928 0,749 0,778 0,818 0,851 0,932 0,764 0,791 0,829 0,859 0,935 0,781 0,806 0,842 0,869 0,938 11 0,792 0,817 0,850 0,876 0,940 12 0,805 0,828 0,859 0,883 0,943 13 0,814 0,837 0,866 0,889 0,945 14 0,825 0,846 0,874 0,895 0,947 15 0,835 0,855 0,881 0,901 0,950 17 0,851 0,869 0,892 0,910 0.954 18 0,858 0,874 0,897 0,914 0,956 19 0,863 0,879 0,901 0,917 0,957 20 0,868 0,884 0,905 0,920 0,959