Solve the Problem $$\text { quadratic mean } = \sqrt { \frac { \sum x ^ { 2 } } { n } }$$

question 58

Multiple Choice

Solve the problem.
-The quadratic mean (or root mean square) is usually used in physical applications. In power distribution systems, for example, voltages and currents are usually referred to in terms of their root mean square value.
The quadratic mean of a set of values is obtained by squaring each value, adding the results, dividing by the
Number of values (n) , and then taking the square root of that result, expressed as $$\text { quadratic mean } = \sqrt { \frac { \sum x ^ { 2 } } { n } }$$ Find the root mean square of these power supplies (in volts) : 110, 105, 10, 72.

• A) 148.5 volts
• B) 74.3 volts
• C) 42.1 volts
• D) 84.3 volts

Identify the role of family and multisystemic therapies in treating behavioral and psychological issues.

Understand the significance of empirical evidence in evaluating therapeutic interventions and self-help resources.

Recognize the impact of placebo effects in the effectiveness of treatments.

Understand the role of psychological interventions in addressing issues related to physical disabilities.

---

Definitions:

Federal Reserve

The central banking system of the United States, responsible for implementing the country's monetary policy and regulating its financial institutions.

Liquidity

A measure of the ease with which an asset can be converted into money without a significant loss of value.

Significant Loss

A substantial reduction in the value of an asset or a large financial deficit experienced by an individual or entity.

Required Reserve Ratio

The fraction of deposits that banks are legally required to keep as reserves, either in their vaults or with the central bank.