Mathematics, 01.11.2019 05:31 robert7248
According to an article in newsweek, the rate of water pollution in china is more than twice that measured in the us and more than three times the amount measured in japan. the mean emission of organic pollutants is 11.7 million pounds per day in china. assume the water pollution in china is normally distributed throughout the year with a standard deviation of 2.8 million pounds of organic emissions per day. a) what is the probability that on any given day the water pollution in china is at least 15 million pounds per day? b) what is the probability that on any given day the water pollution in china is between 6.2 and 9.3 million pounds per day?
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