Mathematics, 21.09.2019 21:10 gabriellabadon2
An urn contains 10 balls with the number ‘5’ printed on them, 6 balls with ‘4’ printed on them, and 4 balls with ‘2’ printed on them. consider the experiment of picking a random ball from the urn and observing the number printed on the ball. if x is the number observed, what is e[x]?
Answers: 3
![E[X]=\sum_{i=1}^{n}x_ip_i](/tpl/images/0250/3241/1f6be.png)
![E[X]=5\times P(A)+4\times P(B)+2\times P(C)\\\\=5\times 0.5+4\times 0.3+2\times 0.2\\=4.1](/tpl/images/0250/3241/9bcda.png)
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An urn contains 10 balls with the number ‘5’ printed on them, 6 balls with ‘4’ printed on them, and...
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