The accompanying bar graph shows the percentage of adults in a certain city who smoked cigarettes for selected years from 1970 through 2010. 50 44% 43% 40- 36% The mathematical model p + = 47 describes the percentage, p, of adults who 30% 30어 26% smoked cigarettes x years after 1970. Use this information to answer questions (a) and (b) below. 20- 10- 1970 1980 1990 2000 2010 Year (a) Does the mathematical model underestimate or overestimate the percentage of adults who smoked cigarettes in 2010? By how much? Select the correct choice below and fill in the corresponding answer box to complete your choice. C A. The model overestimates the actual value by 1 %. O B. The model underestimates the actual value by %. (b) Use the model to project the year when only 11% of adults in this city will smoke cigarettes. The year predicted is .... Percentage Who Smoke

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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.