Lead was banned as an ingredient in most paints in 1978, although it is still used in specialty paints. Lead usage in paints from 1940 through 1980 is reported in the table. Lead Usage in Paint Lead usage, u (thousand tons) Year 1940 70 1950 35 1960 10 1970 5 1980 0.01 (a) Compare the fit of a quadratic model and an exponential model for lead usage. Which model fits the data better? exponential model Oquadratic model (b) Align the data so that x = 0 in 1935. Compare the fit of a quadratic and a log model for lead usage. Which model fits the data better? O quadratic model Ologarithmic model (c) Because lead usage in paint was generally banned in 1978, which model best fits the end behavior? Oquadratic model exponential model logarithmic model (d) Write the function for the quadratic model that gives lead paint usage in thousand tons, where x is the number of years after 1935, with data from 5 x s 45. (Round all numerical values to three decimal places.) u(x) y 0.07x- 4558x+90.789X

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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.