this is my queation

Spray drift is a constant concern for pesticide applicators and agricultural producers. The inverse relationship between droplet size and drift potential is well known. The paper "Effects of 2,4D Formulation and Quinclorac on Spray Droplet Size and Deposition"1' investigated the effects of herbicide formulation on spray atomization. A gure in a paper suggested the normal distribution with mean 1050 um and standard deviation 150 pm was a reasonable model for droplet size for water {the "control treatment") sprayed through a 760 mlfmin nozzle. (a) What is the probability that the size of a single droplet is less than 1440 pm? At least 950 pm? (Round your answers to four decimal places.) less than 1440 pm \\:l at least 950 um |:| (b) What is the probability that the size of a single droplet is between 950 and 1440 pm? {Round your answer to four decimal places.) E (c) HowI would you characterize the smallest 2% of all droplets? (Round your answer to two decimal places.) The smallest 2% of droplets are those smaller than |:l pm in size. (d) If the sizes of ve independently selected droplets are measured, what is the probability that at least one exceeds 1440 pm? (Round your answer to four decimal places.) E