Var(aX + BY)=
A) $a ^ { 2 } \sigma \stackrel { 2 } { X } + b ^ { 2 } \sigma \stackrel { 2 } { Y }$

question 16

Multiple Choice

var(aX + bY) =

• A) \(a ^ { 2 } \sigma \stackrel { 2 } { X } + b ^ { 2 } \sigma \stackrel { 2 } { Y }\)
• B) \(a^{2} \sigma_{\mathrm{X}}^{2}+2 a b \sigma_{X Y}+b^{2} \sigma_{Y}^{2} .\)
• C) \(\sigma _ { X Y } + \mu _ { X } { } ^ { \mu } Y ^ { * }\)
• D) \(a \sigma _ { \mathrm { X } } ^ { 2 } + b \sigma _ { \mathrm { Y } } ^ { 2 }\)

---

Definitions:

Visit Websites

The act of accessing and viewing content on web pages through a browser, usually for information or transaction purposes.

Subscription Commerce

A business model where customers pay a recurring price at regular intervals to access a product or service.

Recurring Schedule

A planned sequence of events or actions that repeat at regular intervals.

Social Media Networks

Online platforms that enable users to create, share content, and participate in social networking, facilitating communication and interaction among individuals or groups.