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It's found that the mean and standard deviation in the fluoride concentration in a water treatment plant are 1.18 ppm and 0.27 ppm, respectively.
It's found that the mean and standard deviation in the fluoride concentration in a water treatment plant are 1.18 ppm and 0.27 ppm, respectively. If we sample the water from the plant, calculate the probability that the fluoride concentration is: (a) Larger than 1.45 ppm. (3 marks) (b) Between 0.729 and 1.091 (4 marks) (c) Smaller than 0.729 (3 marks)
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Discovering Advanced Algebra An Investigative Approach
Authors: Jerald Murdock, Ellen Kamischke, Eric Kamischke
1st edition
1559539844, 978-1604400069, 1604400064, 978-1559539845
