54. Suppose the sediment density (g/cm) of a randomly selected specimen from a certain region is normally distributed with mean 2.65 and standard deviation .85 (suggested in "Modeling Sediment and Water Column Interactions for Hydrophobic Pollutants," Water Research, 1984: 1169?1174).
b. How large a sample size would be required to ensure the the first probability in part (a) is at least .99?
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Solution. a) If the population follows normal distribution with mean 2.65 and standard deviation 0.85. Then for a sample ...
Normal Distribution, Joint Probability Distribution and Random Samples are investigated. The solution is detailed and well presented.