Snoring After surveying 995 adults, 81.5% of whomwere over 30, the National Sleep Foundation reported that 36.8% of all the adults snored. 32% of the respon-dents were snorers over the age of 30. a) What percent of the respondents were under 30 anddid not snore?b) Is snoring independent of age? Explain.

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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.