Find a 99 Percent Confidence Interval for the Difference Between $\sigma$

question 112

Multiple Choice

Find a 99 percent confidence interval for the difference between means n₁ = 49,n₂ = 49, ₁ = 87, ₂ = 92, $\sigma$ ₁² = 13 and $\sigma$ ₂² = 15.

• A)(-12.30 2.30)
• B)(-6.47 -3.53)
• C)(-6.94 -3.05)
• D)(-5.57 -4.43)

Convert fractions to decimal and percent forms, identifying repeating and terminating decimals.

Understand the impact of different time periods and interest rates on loan and investment formulas.

Identify the minimum number of figures required to maintain accuracy in complex calculations.

Understand the concept of discharge by performance and how it applies to fulfilling contractual obligations.

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Definitions:

Shortage

A situation in which the demand for a good or service exceeds its supply in a market.

Surplus

An excess of income or assets over expenditure or liabilities in a given period, indicating financial health.

Price Ceiling

A government-imposed limit on how high a price can be charged for a product or service, typically used to control costs for essential items like food and rent.

Equilibrium Price

The market price at which the quantity of goods supplied is equal to the quantity of goods demanded, representing a state of market balance.