Mathematics, 25.10.2019 06:43 emmalucilleblaha1995
Anew analytical method to detect pollutants in water is beingtested. this new method of chemical analysis is important because, if adopted, it could be used to detect three different contaminants– organic pollutants, volatile solvents, and chlorinatedcompounds – instead of having to use a single test for eachpollutant the makers of the test claim that it can detect highlevels of organic pollutants with 99.7% accuracy, volatile solventswith 99.95% accuracy, and chlorinated compounds with 89.7%accuracy. if a pollutant is not present, the test does not signal. samples are prepared for the calibration of the test and 60% ofthem are contaminated with organic pollutants, 27% with volatilesolvents, and 13% with traces of chlorinated compounds. a testsample is selected randomly.(a) whatis the probability that the test will signal? (b) ifthe test signals, what is the probability that chlorinatedcompounds are present?
Answers: 2
Mathematics, 21.06.2019 16:00
Sam makes his sales calls according to a pattern. he travels either north or south depending on the calendar. some of his past trips were as follows: on february 17, april 24, june 10, september 19, and november 3 he drove north. on february 28, may 25, august 22, november 20, and december 18, he drove south. describe sams' pattern. in which direction will sam drive on oct4 and oct 24?
Answers: 1
Mathematics, 21.06.2019 16:30
If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)
Answers: 2
Mathematics, 21.06.2019 20:30
Stacey filled her 1/2 cup of measuring cup seven times to have enough flour for a cake recipe how much flour does the cake recipe calls for
Answers: 2
Anew analytical method to detect pollutants in water is beingtested. this new method of chemical ana...
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