SOLUTION: A Telecommunications company has eight satellites, Four of which are sending a weak signal. If two are picked at random without replacement, find the probability that both are send

Algebra ->  Probability-and-statistics -> SOLUTION: A Telecommunications company has eight satellites, Four of which are sending a weak signal. If two are picked at random without replacement, find the probability that both are send      Log On


   

Question 1171300: A Telecommunications company has eight satellites, Four of which are sending a weak signal. If two are picked at random without replacement, find the probability that both are sending a weak signal, Express your answer as a fraction in lowest terms. P( Both are sending a weak signal) =
Answer by Edwin McCravy(20055) About Me  (Show Source):
You can put this solution on YOUR website!
On your TI-84,

press 2nd vars

Scroll down to highlight A:binompdf(   <--caution! not B:binomcdf(

press enter

You may see this "wizard" unless your TI-84 is old, or a TI-83

        binompdf
trials:8
p:4/8
x value:2
Paste

Scroll down and highlight Paste

press enter

binompdf(8,4/8,2)  <--make sure it reads this way if you don't have the wizard.

press enter

Read the answer, it's a 6-place decimal.

To find out what fraction this is equal to press 

math enter enter

Edwin