The Standard Deviation of a Sample Is Estimated to Be

question 30

Multiple Choice

The standard deviation of a sample is estimated to be 80 and the standard error has been calculated to be 5. What size of sample will the researcher need to ensure a 90% confidence interval (Z=1.64) ?

• A) 256
• B) 420
• C) 688
• D) 1640

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Definitions:

Government Spending

Expenditures by government agencies on goods and services that influence the economy, including investments, social services, and defense.

Reserve Requirements

The minimum amount of funds that a bank is required to hold in reserve, determined by central banking authorities, to ensure that the institution remains liquid.

Monetary Control

Monetary Control involves the regulation of the money supply and interest rates by central banks to manage economic stability and growth.

Open Market Operations

The buying and selling of government securities by a central bank in order to control the money supply and influence interest rates.