Problem B (5 points): A medical sociologist investigated the relationship between severity of illness ( X ) and length of stay in a hospital ( Y ) . Choosing 8 patients at random, she ranked the seriousness of their ailments and determined the number of days they were hospitalized. Compute a rank-order correlation coefficient and indicate whether there is a significant relationship between X and Y at the .05 level of significance. Provide the value of the coefficient, total N , and the decision about the null hypothesis. ( 5 points)..