7. A researcher interested in eating behavior wants to determine if scary movies cause people to eat more popcorn than musicals. You randomly assign 10 participants to a group that watches a scary movie (Psycho) and another 10 participants to a group that watches a musical (The Sound of Music). At the beginning of the movie, you give each participant a tub of 84 pieces of popcorn and tell each person not to share their popcorn with anyone. At the end of the movie, you measure the number of pieces of popcorn eaten by each participant. The data are shown below. Based on the results of this t-test, state the conclusions about the difference between the pieces of popcorn eaten by subjects viewing a scary movie versus a musical. Scary Musical 45 32 67 38 69 33 56 49 73 44 56 60 63 48 84 36 49 23 56 39

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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.