When Variances $S _ { 1 } ^ { 2 } \text { and } S _ { 2 } ^ { 2 }$

question 23

Multiple Choice

When variances $S _ { 1 } ^ { 2 } \text { and } S _ { 2 } ^ { 2 }$ of two independent samples are combined and $S ^ { 2 }$ is computed, the $S ^ { 2 }$ is referred to as

• A) the pooled estimator of \(S ^ { 2 }\)
• B) the combined estimator of \(S ^ { 2 }\)
• C) the pooled estimator of the common variance \(\sigma ^ { 2 }\)
• Of the two populations
• D) the adjusted estimator of \(S ^ { 2 }\)
• E) None of the above answers are correct.

---

Definitions:

Excess Proceeds

The amount of money that remains after all debts, liabilities, and costs have been paid off in a transaction, often associated with auctions or foreclosures.

Neonates

Newborn babies, especially within the first month after birth.

Calming Effect

The process of inducing a state of relaxation and reduced stress in an individual.

Rooting Reflex

Turning the mouth and head toward stroking of the cheek or the corner of the mouth.