The article A Probabilistic Analysis of Dissolved Oxygen
Chapter 14, Problem 14.18(choose chapter or problem)
The article A Probabilistic Analysis of Dissolved Oxygen Biochemical Oxygen Demand Relationship in Streams (J. Water Resources Control Fed., 1969: 7390) reports data on the rate of oxygenation in streams at 20C in a certain region. The sample mean and standard deviation were computed as x .173 and s .066, respectively. Based on the accompanying frequency distribution, can it be concluded that oxygenation rate is a normally distributed variable? Use the chi-squared test with .05.Rate (per day) FrequencyBelow .100 12.100below .150 20.150below .200 23.200below .250 15.250 or more 13
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