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Pulsified333
 one year ago
Assume that there are 13 board members: 8 females, and 5 males including Larry. There are 4 tasks to be assigned. Note that assigning the same people different tasks constitutes a different assignment.
(1) Find the probability that both males and females are given a task.
(2) Find the probability that Larry and at least one female are given tasks.
Pulsified333
 one year ago
Assume that there are 13 board members: 8 females, and 5 males including Larry. There are 4 tasks to be assigned. Note that assigning the same people different tasks constitutes a different assignment. (1) Find the probability that both males and females are given a task. (2) Find the probability that Larry and at least one female are given tasks.

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Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0@jim_thompson5910

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1what do you have so far?

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0I have one of the answers right but I don't know which is right 1) 15360/17160 2) 864/17160

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1so it says that exactly one of your answers is correct?

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0yeah I just don't know which

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1hmm strange. I'm not getting either but I probably made a mistake somewhere. Let me double check

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0I think the first one is right though

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1this is what I keep getting m = male f = female problem (1) 3 m, 1 f = (5 npr 3)*(8 npr 1) = 480 2 m, 2 f = (5 npr 2)*(8 npr 2) = 1120 1 m, 3 f = (5 npr 1)*(8 npr 3) = 1680 total = 480+1120+1680 = 3280 # of outcomes = 13 npr 4 = 17160 probability = 3280/17160 Problem (2) Larry + 2 m + 1 f = (4)*(4 npr 2)*(8 npr 1) = 384 Larry + 1 m + 2 f = (4)*(4 npr 1)*(8 npr 2) = 896 Larry + 0 m + 3 f = (4)*(4 npr 0)*(8 npr 3) = 1344 total = 384+896+1344 = 2624 # of outcomes = 13 npr 4 = 17160 probability = 2624/17160

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0For number 1 I got 17160(1680+120)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1why did you compute it like that?

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0https://answers.yahoo.com/question/index?qid=20110131185103AA6hK3T

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0I followed this and I got that first answer but i don't understand how to do number 2

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0I remember now it was the second one thats wrong

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1ah I see now, that's a better way to do #1

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1why not determine the number of ways to have Larry + 3 males then subtract that result from the total (17160) to figure out how many ways to have Larry + at least one female

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0so how would you do that

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1how many ways are there to assign tasks to Larry and 3 other males?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1how did you get 40?

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0well if larry has task A then that one thing. Then lets say he gets task B, that is different than task A

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0so isnt there 4 different tasks that larry could be assigned

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1so he has 4 choices, yes

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.151 = 4 males left 41 = 3 slots left Compute P(4,3)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1then you multiply that by 4 4*P(4,3) = 4*24 = 96

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1there are 96 ways to pick Larry + 3 other males

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0okay so 1716096?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1hmm now that I think about it, that computes the number of ways to pick everything the opposite of "Larry + 3 other males" so larry is left out. Let me rethink

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1did you see how I did problem 2 above? I'm guessing that answer didn't work?

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0I didn't try it yet

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0but yes I saw how you did it

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1give it a try. It's probably wrong but I initially thought it was the correct way to do it

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0well i only have 4 attempts left so

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0look at how this person did number two for a similar but not the same problem http://www.jiskha.com/display.cgi?id=1236051521

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0I have no clue how to find the second answer

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0@jim_thompson5910 i have no clue how to find the second answer

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1same here. I'm still trying to decipher what that other poster wrote

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1there are (13 npr 4)  (12 npr 4) = 5,280 ways to have 4 people chosen where Larry is one of the 4 people

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1as for the other piece, hmm, I'm thinking there are (12 npr 3)  (4 npr 3) = 1,296 ways to pick at least one female

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1so maybe we multiply the results to get 5,280*1,296 = 6,842,880 that result seems way too big though

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0it is because its bigger than the total number of ways

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0I found it :D 216/715

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1I'm curious as to how you got that

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0My friend helped me with that so he's gonna explain it to me tomorrow thank you for trying though
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