Use a ?² Test to Test the Claim That in the Given

question 9

Essay

Use a ?² test to test the claim that in the given contingency table, the row variable and the column variable are independent
-Tests for adverse reactions to a new drug yielded the results given in the table. At the 0.05 significance level, test the claim that the treatment (drug or placebo)is independent of the reaction (whether or not headaches were experienced). $$\begin{array} { r | r r } & \text { Drug}& \text { Placebo } \\\hline \text { Headaches } & 11 & 7 \\\text { No headaches } & 73 & 91\end{array}$$

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Definitions:

General Ledger

A comprehensive record of all financial transactions over the life of a company, used to prepare financial statements.

Nominal Account

An accounting ledger account that starts each new accounting period with a zero balance and ends with a closed balance to transfer to a real account.

Retained Earnings

Retained Earnings represent the cumulative amount of net income earned by a company that has not been distributed to shareholders as dividends.

Accumulated Depreciation

The total amount of depreciation expense that has been recorded against a fixed asset since it was acquired and placed into service.