kaitlynneal1484 kaitlynneal1484

21-07-2018
Mathematics

contestada

An urn contains 5 white ball and 8 black balls. 4 balls are randomly selected.
a. with replacement, what is the probability that the first 3 are black and the 4 the is white?

Respuesta :

konrad509 konrad509

21-07-2018

[tex] |\Omega|=13^4=28561\\
|A|=8^3\cdot5=2560\\\\
P(A)=\dfrac{2560}{28561}\approx9\% [/tex]

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