Suppose that the oxygen level P (for purity) in a body of water t months after an oil spill is given by 16 P(t) = 100 1 + (t + 4)2 (a) Find how long it will be before the oxygen level reaches its minimum. t + 4 t = months (b) Find how long it will be before the rate of change of P is maximized. That is, find the point of diminishing returns. t = months

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Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.