2) According to New York State Department of Environmental Conservation (NYSDEC) standards a dissolved oxygen level of 5 mg/L or less indicates ecosystem degradation. By this criterion, what is the probability of not meeting the standards at each site in the summer when the triathlon is held? 3) What is the probability of not meeting standards simultaneously at all sites?

The sites dissolved oxygen level

TR1 = 5.55

TR2= 7.78

NC3= 7.17

N4 = 6.80

PLEASE TELL WHICH PROBABILITY YOU USE AND WHY .