× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
c
5
j
5
a
5
L
5
f
5
j
5
D
4
k
4
y
4
t
4
h
4
l
4
Home Q & A Board Science-Related Homework Help Mathematics
New Topic  
alexisblack alexisblack
wrote...
Go to Answer
Posts: 817
Rep: 0 0
6 years ago
If X and Y are random variables with E(X) = 6 and E(Y) = 9, then E(2X + 3Y) is:
 a. 39
  b. 15
  c. 27
  d. 12
Read 25 times
1 Reply
Replies
Answer verified by a subject expert
eehughesseehughess
wrote...
#1
Top Poster
Posts: 1161
Rep: 5 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

alexisblack Author
wrote...

6 years ago
Helped a lot
ky
wrote...

Yesterday
this is exactly what I needed
Jadakiss
wrote...

2 hours ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  868 People Browsing
 139 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 189
  
 325
  
 73
Your Opinion
Previous poll results: Should Ph.D.'s be addressed as doctors?