What is the probability ofthree or more fatal accidents occurring during 85-99 for the Airlines on the list? What is the probability of one or more accidents occurring 00-14? Calculate againand this time remove all airlines from the calculation that had zero incidents.

(Note: This is a simple probability estimate assuming nothing more than the mean, the SD, and Z Table values.) Example: approximately 0.28SD above the mean--per Z table (since this is higher than the mean--and more than the mean is less likely to happen) then: 1- .6103= 0.3897