Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
Libniz
Group Title
2 balls are chosen randomly from an urn containing 8 white, 4 black, 2 orange ball. Suppose you win 2 dollars for each black ball and lose 1 dollar for each white ball selected. Let X be the net winning , Find
a) S_x
my answer is
for a)
(2,1,2)
 2 years ago
 2 years ago
Libniz Group Title
2 balls are chosen randomly from an urn containing 8 white, 4 black, 2 orange ball. Suppose you win 2 dollars for each black ball and lose 1 dollar for each white ball selected. Let X be the net winning , Find a) S_x my answer is for a) (2,1,2)
 2 years ago
 2 years ago

This Question is Closed

Libniz Group TitleBest ResponseYou've already chosen the best response.0
b) asked for pmf P_x (8/14)^2 x=2 (4/14)*(8/14) x=1 (4/14)^2 x=2
 2 years ago

MathLegend Group TitleBest ResponseYou've already chosen the best response.0
What type of math is this? Algebra 1?
 2 years ago

MathLegend Group TitleBest ResponseYou've already chosen the best response.0
Honestly, I have no clue.
 2 years ago

Zarkon Group TitleBest ResponseYou've already chosen the best response.2
sampling with or without replacement?
 2 years ago

Libniz Group TitleBest ResponseYou've already chosen the best response.0
didn't say anything about replacement so I think without
 2 years ago

Zarkon Group TitleBest ResponseYou've already chosen the best response.2
if it is without...then your pmf is not correct
 2 years ago

Libniz Group TitleBest ResponseYou've already chosen the best response.0
what is it mean by "replacement"?
 2 years ago

Zarkon Group TitleBest ResponseYou've already chosen the best response.2
if it is replacement then you pick a ball...look at it ..put it back then randomly sample again with all 14 balls
 2 years ago

Libniz Group TitleBest ResponseYou've already chosen the best response.0
I think ,from the wording; we are pulling two balls out at the same time
 2 years ago

Zarkon Group TitleBest ResponseYou've already chosen the best response.2
that is what I am thinking
 2 years ago

Zarkon Group TitleBest ResponseYou've already chosen the best response.2
so you need to redo your pmf
 2 years ago

Zarkon Group TitleBest ResponseYou've already chosen the best response.2
if you get black balls then you get $2 each correct
 2 years ago

Zarkon Group TitleBest ResponseYou've already chosen the best response.2
so one possibility is that you win $4
 2 years ago

Libniz Group TitleBest ResponseYou've already chosen the best response.0
white ball, I lost $1
 2 years ago

Zarkon Group TitleBest ResponseYou've already chosen the best response.2
BB=$4 BO=$2 OB=$2 BW=$1 WB=$1 ...
 2 years ago

Zarkon Group TitleBest ResponseYou've already chosen the best response.2
so X can take the values 4,2,1,0,1,2
 2 years ago

Libniz Group TitleBest ResponseYou've already chosen the best response.0
oh, I see, I omitted orange which I shouldn't have
 2 years ago

Libniz Group TitleBest ResponseYou've already chosen the best response.0
so how would I write PMF?
 2 years ago

Zarkon Group TitleBest ResponseYou've already chosen the best response.2
what i s the probability of 2 blacks? ie $4
 2 years ago

Libniz Group TitleBest ResponseYou've already chosen the best response.0
(8/14)*(7/13)
 2 years ago

Zarkon Group TitleBest ResponseYou've already chosen the best response.2
ok what about winning $2
 2 years ago

Libniz Group TitleBest ResponseYou've already chosen the best response.0
(4/14)(2/13) or (2/14)(4/13) ?
 2 years ago

Zarkon Group TitleBest ResponseYou've already chosen the best response.2
winning $2 is BO or OB
 2 years ago

Zarkon Group TitleBest ResponseYou've already chosen the best response.2
there are 8 blacks...i see no 8's in your solution
 2 years ago

Zarkon Group TitleBest ResponseYou've already chosen the best response.2
lol.....there are 8 W
 2 years ago

Zarkon Group TitleBest ResponseYou've already chosen the best response.2
4 black...so prob of BB is \[\frac{4}{14}\cdot\frac{3}{13}\]
 2 years ago

Zarkon Group TitleBest ResponseYou've already chosen the best response.2
not what you had above
 2 years ago

Zarkon Group TitleBest ResponseYou've already chosen the best response.2
so \[P(X=4)=\frac{4}{14}\cdot\frac{3}{13}\]
 2 years ago

Libniz Group TitleBest ResponseYou've already chosen the best response.0
right , so for $2 (4/14)(2/13) or (2/14)(4/13) (4/14)(2/13)+(2/14)(4/13)=
 2 years ago

Zarkon Group TitleBest ResponseYou've already chosen the best response.2
the sum of the two
 2 years ago

Libniz Group TitleBest ResponseYou've already chosen the best response.0
I understand now; I really appreciate your help
 2 years ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.