3. Stephen has found out that the average weight of packed gummy candies selected from a normally distributed population is 200 g with a standard deviation of 8 g. Find the point and the interval estimates of all gummy candies, using 95% confidence level. 4. In an interview held among 18 randomly selected elementary teachers of a certain school, the mean salary was found to be Php 21 000 with a standard deviation of Php 3 000. Use 95% confidence to estimate the population mean where the sample came from.

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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.