A Researcher Is Testing a Hypothesis of a Single Mean $\alpha$

question 2

Multiple Choice

A researcher is testing a hypothesis of a single mean.The critical z value for $\alpha$ = .05 and a two-tailed test is +1.96.The observed z value from sample data is -1.85.The decision made by the researcher based on this information is to ___ the null hypothesis.

• A)reject
• B)not reject
• C)redefine
• D)change the alternate hypothesis into
• E)restate

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Definitions:

Operating Leverage

A measure of how sensitive a company's operating income is to changes in revenue, indicating the degree of fixed versus variable costs.

Fiscal Policy

Government policies regarding taxation and spending to influence the economy.

Monetary Policy

The actions of a central bank, currency board, or other regulatory committee that determine the size and rate of growth of the money supply, which in turn affects interest rates.