anonymous
  • anonymous
Find the probability that a 4-person team consists of 2 girls and 2 boys if the team is chosen at random from: a.3 girls; 3 boys b. 5 girls; 2 boys c. 2 girls; 6 boys
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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inkyvoyd
  • inkyvoyd
I'm not good with probability. :o
inkyvoyd
  • inkyvoyd
Ok, so we are looking for the probability of either getting just 2 boys, or just 2 girls.
inkyvoyd
  • inkyvoyd
for c, that's (2/8)*(1/7)*(1)*(1)*(4C2)

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More answers

inkyvoyd
  • inkyvoyd
No, we can reduce the problem into finding the probability of EXACTLY 2 boys or EXACTLY 2 girls given 4 people. that makes it easier.
inkyvoyd
  • inkyvoyd
For b, (2/7)(1/6)*(1)*(1)*(4C2)
anonymous
  • anonymous
where are you getting these numbers?
inkyvoyd
  • inkyvoyd
for a, (3/6)(2/5)(3/4)(2/4)*(4C2)
inkyvoyd
  • inkyvoyd
well, essentially, for C, we calculate the probability of getting 2 girls then 2 boys, and then multiply it be 4C2 because order doesn't matter.
inkyvoyd
  • inkyvoyd
Same for B and A.
inkyvoyd
  • inkyvoyd
It's hard to explain, but even though the number decreases by one time, no matter what order you select the boys and girls from, you would still get the same probability. Thus we simply multiply that probability by the number of combinations that are possible.
anonymous
  • anonymous
a. 3/10 = .3
anonymous
  • anonymous
Alright, who is right? -_-
anonymous
  • anonymous
I thought you are the one just learned this technique from "Miama.."
inkyvoyd
  • inkyvoyd
I'm correct, because, LOL.
anonymous
  • anonymous
But ink man got a different answers than her.
inkyvoyd
  • inkyvoyd
Besides, Chloroplast didn't show his work. I always hated biology.
inkyvoyd
  • inkyvoyd
/her, if you're a girl
anonymous
  • anonymous
miama got 9/15 for the answer.
anonymous
  • anonymous
I believe you should trust her knowlege :)
anonymous
  • anonymous
So, that's settle down which method, right!
inkyvoyd
  • inkyvoyd
well, is this a test, or homework?
inkyvoyd
  • inkyvoyd
and 9/15 for which question?
anonymous
  • anonymous
she got 9/15 for a and this is a homework.
inkyvoyd
  • inkyvoyd
shall I write a python program and determine the answer for sure?
inkyvoyd
  • inkyvoyd
Can you bump this? I think other's could help more than me
inkyvoyd
  • inkyvoyd
and, I think Miama is right, but I will write a computer program to make sure.
anonymous
  • anonymous
Her user name is "myininaya"!
anonymous
  • anonymous
@inkyvoyd, I don't think that you're bad at bio :P Otherwise, how come you know where cholorphyll come from :)
anonymous
  • anonymous
@Perl this type of question pretty much like your!
inkyvoyd
  • inkyvoyd
I'm prtty bad at biology. It's my lowest grade out of everyhing else.
inkyvoyd
  • inkyvoyd
Actually, I forgot how to write programs in python, lemme search if I sitll have my old programs.
anonymous
  • anonymous
I don't have my calculator here, but according to Myininaya: a) 3C2 * 3C2 / 6C4 b) 5C2 * 2C2/ 7C4 c) 2C2 * 6C2/ 8C4
inkyvoyd
  • inkyvoyd
Well, She's most likely correct.
anonymous
  • anonymous
a) 3 * 3 / 3 * 5 = 3/5
anonymous
  • anonymous
Just plug them in the calculator to double check your manual work!

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