Given Independent Random Variables with Means and Standard Deviations as Shown,find

question 158

Multiple Choice

Given independent random variables with means and standard deviations as shown,find the mean and standard deviation of the variable $$Y _ { 1 } + Y _ { 2 }$$ $$\begin{array} { c | c c } & \text { Mean } & \text { SD } \\\hline \mathrm { X } & 150 & 12 \\\mathrm { Y } & 200 & 18\end{array}$$

• A)? = 350,? = 21.63
• B)? = 350,? = 30
• C)? = 400,? = 25.46
• D)? = 400,? = 36
• E)? = 400,? = 6.00

---

Definitions:

Theoretical Perspective

A viewpoint or set of assumptions that shapes how one understands, interprets, and analyses phenomena.

Martha Rogers

An influential nurse theorist known for her "Science of Unitary Human Beings."

Partnering

Creating and maintaining a cooperative and collaborative relationship or arrangement between individuals or entities with the aim of achieving a specific goal or undertaking.

Healing

The process of restoration to health from an unbalanced, diseased, or damaged state.