. For some perspective, the median age at first marriage has gone up over time. In 1750 the median age for first marriage in the U.S. was at ZZ.o old for men and 20.3 years old for women. The data below is for the 50 states and Washington D.C. (N = 51). The data are given with one decimal place, so 26 | 5 equals 26.5. Female Median Age Male Median Age STEM LEAF Count STEM LEAF Count 231 5 5 2 23 0 24| 3 4 2 241 24 5 6 9 24 HOO 25|0 02 3 3 4 4 25/ 4 25 5 5 5 6 6 6 7 7 8 9 9 11 25| 79 2 26 0000122334 10 26 1 13 4 265 567 78 8 8 00 26 5 5 7 8 9 9 9 9 9 27| 1 3 27| 2 3 4 4 4 4 27| 6 8 27 5 5 5 6 6 78 9 28| 1 2 2 OOWNN 2803 3 4 CO A 281 28 5 5 56 6 6 67 291 291 0 2 3 4 A 291.7 291 8 8 301 OOH 30| 0 3 OONN 301 30 31 31 O 31 31/5 26 | 5 equals 26.5 Data for Females Data for Males Sum(X) 1327.50 Sum(X) 1418.0 Sum(X^2) 34623.85 Sum(X^2) 39507.72 Count 51 Count 51 Q1 25.40 Q1 26.9 Q2 26.00 Q2 27.6 03 26.70 03 28.6 One of the values for Males is 31.5. Calculate a Z-score for this value. Note: the sign of a Z-score does matter. Use 2 decimal places for your answer. Use the proper rules of rounding