It Is Known That the Population Variance Equals 484

question 27

Multiple Choice

It is known that the population variance equals 484. With a .95 probability, the sample size that needs to be taken to estimate the population mean if the desired margin of error is 5 or less is

• A) 25
• B) 74
• C) 189
• D) 75

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Definitions:

Interest Rates

The cost of borrowing money or the return for investing, typically expressed as a percentage of the principal, varying over time based on economic conditions.

Deposit Expansion Multiplier

The ratio that measures the potential increase in total deposits in the banking system generated from an increase in primary deposits.

Excess Reserves

Funds that banks hold over and above the required reserve ratio set by a central banking authority, often for safety or emergency purposes.

Reserve Requirements

The minimum amount of reserves that a bank must hold as mandated by a central bank, affecting the bank's ability to lend.