A Test on World History Was Given to a Group

question 187

Short Answer

A test on world history was given to a group of individuals before and also after a film on the history of the world was presented. The results are given below. We want to determine if the film significantly increased the test scores. For the following matched samples, let the difference "d" be d = after - before.)
$\begin{array}{lll}\text { Individual }&\text { After }&\text { Befor }\\1 & 92 & 86 \\2 & 86 & 88 \\3 & 89 & 84 \\4 & 90 & 90 \\5 & 93 & 85 \\6 & 88 & 90 \\7 & 97 & 91\end{array}$
a. Give the hypotheses for this problem.
b. Compute the test statistic.
c. At 95% confidence, test the hypotheses.

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Definitions:

Residual Dividend Policy

A strategy where dividends paid to shareholders are set as the remainder after all project and operation expenses and investments are covered.

Residual Dividend Policy

A corporate approach to dividends where the amount distributed is based on profits remaining after all operational and expansion expenses are covered.

Common Stock

A type of equity security that represents ownership in a corporation, entitling the holder to vote at shareholder meetings and to receive dividends.

Dividend Payout Ratio

A financial ratio that shows the percentage of a company's earnings paid out as dividends to shareholders.