Given independent random variables with means and standard deviations as shown,find the mean and standard deviation of the variable $$x _ { 1 } + x _ { 2 } + x _ { 3 }$$ $$\begin{array} { c | c c }
& \text { Mean } & \text { SD } \
\hline \mathrm { X } & 12 & 2 \
\mathrm { Y } & 50 & 11
\end{array}$$
A)? = 6,? = 19.05
B)? = 6,? = 5.74
C)? = 6,? = 33
D)? = 86.60,? = 19.05
E)? = 36,? = 3.46

Question

Given independent random variables with means and standard deviations as shown,find the mean and standard deviation of the variable $$x _ { 1 } + x _ { 2 } + x _ { 3 }$$ $$\begin{array} { c | c c } 
& \text { Mean } & \text { SD } \
\hline \mathrm { X } & 12 & 2 \
\mathrm { Y } & 50 & 11
\end{array}$$
A)? = 6,? = 19.05
B)? = 6,? = 5.74
C)? = 6,? = 33
D)? = 86.60,? = 19.05
E)? = 36,? = 3.46

Quizplus · Accepted Answer

The Answer of Given independent random variables with means and standard deviations as shown,find the mean and standard deviation of the variable $$x _ { 1 } + x _ { 2 } + x _ { 3 }$$ $$\begin{array} { c | c c } 
& \text { Mean } & \text { SD } \
\hline \mathrm { X } & 12 & 2 \
\mathrm { Y } & 50 & 11
\end{array}$$
A)? = 6,? = 19.05
B)? = 6,? = 5.74
C)? = 6,? = 33
D)? = 86.60,? = 19.05
E)? = 36,? = 3.46

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