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(20054) (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
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