SOLUTION: A box contains 21 yellow, 24 green and 27 red jelly beans.
If 13 jelly beans are selected at random, what is the probability that:
a) 10 are yellow?
b) 10 are yellow and
Algebra.Com
Question 710221: A box contains 21 yellow, 24 green and 27 red jelly beans.
If 13 jelly beans are selected at random, what is the probability that:
a) 10 are yellow?
b) 10 are yellow and 2 are green?
c) At least one is yellow?
Sorry but i dont have the slightest clue how to do this.I would aprreciate the help!
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A box contains 21 yellow, 24 green and 27 red jelly beans.
There are 72 jelly beans.
----------------------------
If 13 jelly beans are selected at random, what is the probability that:
a) 10 are yellow?
# of ways to succeed: 21C10*51C3
# of possible outcomes: 72C13
---
P(10 yellow) = [21C10*51C3]/72C13 = 0.0001036...
=======================================================
b) 10 are yellow and 2 are green?
P(10 yellow and 2 green) = [21C10*24C2*29C1]/72C13 = 0.000039814
------------------------------------------
c) At least one is yellow = 1 - P(none are yellow)
= 1 - [51C13/72C13]
---
= 0.9933
==============
Cheers,
Stan H.
===============
RELATED QUESTIONS
A box contains 21 yellow, 28 green and 38 red jelly beans. If 14 jelly beans are selected (answered by jim_thompson5910)
please help me with this question:A box contains 25 yellow, 26 green and 36 red jelly... (answered by stanbon)
A box contains 7 yellow, 15 green and 17 red jelly beans.
If 2 jelly beans are selected (answered by ikleyn)
A box contains 17 yellow, 29 green and 36 red jelly beans.
If 12 jelly beans are... (answered by robertb)
A box contains 15 yellow, 29 green and 36 red jelly beans.
If 10 jelly beans are... (answered by Edwin McCravy)
A box contains 23 yellow, 30 green and 31 red jelly beans.
If 14 jelly beans are... (answered by Edwin McCravy)
A jar contains 15 red jelly beans, 12 yellow jelly beans, and 18 orange jelly beans.... (answered by EdenWolf)
A jar contains 18 red jelly beans, 22 yellow jelly beans, and 14 orange jelly beans.... (answered by manu17)
Ten jelly beans are selected, one at a time from a bowl containing 10 black, 10 red and... (answered by solver91311)