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 2,4-D Formulation and Quinclorac on Spray Droplet Size and Deposition"t investigated the effects of herbicide formulation on spray atomization. A figure in a paper suggested the normal distribution with mean 1050 um and standard deviation 150 um was a reasonable model for droplet size for water (the "control treatment") sprayed through a 760 ml/min nozzle. n USE SALT (a) What is the probability that the size of a single droplet is less than 1380 um? At least 950 pm? (Round your answers to four decimal places.) less than 1380 um 0.9861 at least 950 um 0.7257 (b) What is the probability that the size of a single droplet is between 950 and 1380 pm? (Round your answer to four decimal places.)

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