100 random samples were taken from a large population. a particular numerical characteristic of sampled items was measured. the results of the measurements were as follows. 45 measurements were between 85.9 and 90.0 90.1 was observed once 90.2 was observed three times 90.3 was observed twice 90.4 was observed four times 45 measurements were between 90.5 and 95.8 the smallest value was 85.9 and the largest value was 95.8. the sum of all 100 measurements was 9117.0. except those noted, no measurements occurred more than twice. what is the mean of the measurements?