An Analyst Plans to Test Whether the Standard Deviation for the Time

question 57

Multiple Choice

An analyst plans to test whether the standard deviation for the time it takes bank tellers to provide service to customers exceeds the standard of 1.5 minutes.The correct null and alternative hypotheses for this test are:

• A)H₀ : σ > 1.5
• H_A : σ ≥ 1.5
• B)H₀ : σ ≤ 1.5
• H_A : σ > 1.5
• C)H₀ : σ² ≤ 2.25
• H_A : σ² > 2.25
• D)H₀ : σ² > 2.25

---

Definitions:

Marginal Utilities

The supplementary pleasure or value a consumer secures by acquiring one more unit of a product or service.

Total Utility

The total satisfaction or benefit that a consumer receives from consuming a given quantity of goods or services.

Current Consumption

The amount of goods and services consumed by individuals or households in the present period.

Marginal Utility

Additional contentment or usefulness achieved through the use of one more unit of a good or service.