A four-year university has decided to implement a new approach to teaching Statistics. Full-time and adjunct professors were surveyed to determine whether they preferred the traditional lecture approach or a computer approach to teaching Statistics. Use hypothesis testing to test the independence of opinion between the two groups. What is the expected value of an adjunct professor who prefers computer instruction? Prefer Prefer No Lectùre Computer 13 Preference Full-time 8 6 Adjunct 11 22 10 O a 13.50 O b 9.83 21.50 11.67

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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.