THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 64

Multiple Choice

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A confidence interval for the difference between the means of two normally distributed populations based on the following dependent samples is desired:

-If the observed sample means are and
Then a 100(1- α) % confidence interval for the difference between two means,independent samples,and known population variances is given by:

• A) - ± z_α/2
• B) - ± z_α/2
• C) - ± z_{α/2 NEWLINE}
• D) - ± z_α/2

---

Definitions:

Aggregate Demand

Summation of demand for all goods and services in an economy, factored at a certain price level and within a definite time span.

Unemployment

The condition where individuals who are capable of working and are actively seeking a job are unable to find employment.

Policymakers

Individuals or groups responsible for making decisions on public policy, shaping laws, regulations, and guidelines that govern the country or specific sectors.

Anticipated

Expected or predicted, often used in contexts where outcomes or events are seen as probable based on current information or trends.