Test the Null Hypothesis of Independence of the Two Classifications

question 19

Essay

Test the null hypothesis of independence of the two classifications, A and B, of the 3 × 3 contingency tableshown below. Test using α = 0.10. $$\begin{array} { l l | l l l } & & & \mathrm { B } \\& & \mathrm { B } _ { 1 } & \mathrm {~B} _ { 2 } & \mathrm {~B} _ { 3 } \\\hline & \mathrm { A } _ { 1 } & 19 & 40 & 60 \\\mathrm {~A} & \mathrm {~A} _ { 2 } & 55 & 23 & 22 \\& \mathrm {~A} _ { 3 } & 31 & 42 & 47\end{array}$$

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Definitions:

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What-if Analysis

A process that allows for changing variables to see how those changes will affect the outcome of a formula or situation.

VLOOKUP

A function in spreadsheet programs that searches for a value in the first column of a range and returns a value in the same row from a specified column.

Pivot Table

A data summarization tool used in spreadsheet software that enables users to reorganize, group, and summarize data for analysis.