A Proofreader Checked 160 Ads for Grammatical Errors Under the Null Hypothesis of a Uniform Distribution, the Expected

question 25

Multiple Choice

A proofreader checked 160 ads for grammatical errors. The sample frequency distribution is shown: $$\begin{array} { | l | c | c | c | c | } \hline \text { Number of Errors } & 0 & 1 & 2 & 3 \\\hline \text { Observed Frequency } & 10 & 65 & 71 & 14 \\\hline\end{array}$$ Under the null hypothesis of a uniform distribution, the expected number of times we would get 0 errors is:

• A)10.
• B)20.
• C)30.
• D)40.

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Definitions:

Surplus

The amount by which revenue exceeds expenses in a given period, indicating a positive financial state.

Share Option

A right granted by a company to its employees or executives to purchase shares in the company at a preset price, often used as part of compensation packages.

Exercise Price

The specified price at which an option holder can buy (call) or sell (put) the underlying security or commodity.

Obligation

A duty or responsibility to act or perform in a certain way, often legally binding, resulting from a contract, law, or moral responsibility.