One thousand lots of product, each consists of 20 items. Randomly take out 3 in a lot and reject the lot if nonconforming parts are found. At last, there are 850 lots out of the 1000 lots are accepted. Estimate the average quality level of these products.
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.
One thousand lots of product, each consists of 20 items. Randomly take out 3 in a lot and reject the lot if nonconforming parts are found. At last, there are 850 lots out of the 1000 lots are accepted. Estimate the average quality level of these products.
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