A sale manager of Febreze, air freshener product would like to compare whether the sale distribution reflects the population in four different locations. According to Australian Bureau of Statistics, 35% of the population lives in Melbourne, 21% in Sydney, 24% in the Canberra, and 20% in Adelaide. Table below presents a breakdown of a sample of 400 orders randomly selected from those shipped last month. What is the critical value at the .01 level of risk?
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.
A sale manager of Febreze, air freshener product would like to compare whether the sale distribution reflects the population in four different locations. According to Australian Bureau of Statistics, 35% of the population lives in Melbourne, 21% in Sydney, 24% in the Canberra, and 20% in Adelaide. Table below presents a breakdown of a sample of 400 orders randomly selected from those shipped last month. What is the critical value at the .01 level of risk?
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