4. Probability Distributions: Random Variables
Sums of Random Variables
Suppose:
#\,\,\,\,\,\,\,\,\scriptsize{\bullet}# #\,\mathbb{E}[Y]= 9.7\phantom{0}##\,\,\,\,\,\,\,\,\scriptsize{\bullet}# #\,Var[Y]= 2.88##\,\,\,\,\,\,\,\,\scriptsize{\bullet}# #\,\mathbb{E}[Z]= 11.8##\,\,\,\,\,\,\,\,\scriptsize{\bullet}# #\,Var[Z]= 2.89#
#\,\,\,\,\,\,\,\,\scriptsize{\bullet}# #\,X= 3Y + 4Z#
Find #\mathbb{E}[X]#.
| #\mathbb{E}[X]=# |
Unlock full access
