ZaniaP465329 ZaniaP465329
  • 04-11-2022
  • Mathematics
contestada

What is the probability that a randomly chosen contestant tried raking the ground or charmed 5 - 10 worms

What is the probability that a randomly chosen contestant tried raking the ground or charmed 5 10 worms class=

Respuesta :

SahanL73447 SahanL73447
  • 04-11-2022

According to the problem, the probability that a contestant tried ranking the ground is 0.7 and the probability that a contestant charmed 5-10 worms is 0.3.

So, the probability of A or B happening is-

[tex]P(A\cup B)=P(A)+P(B)-P(A\cap B)[/tex]

Because the events are not mutually exclusive, where

[tex]P(A\cap B)=P(A)\cdot P(B)=0.7\cdot0.3=0.21[/tex]

Then,

[tex]P(A\cup B)=0.7+0.3-0.21=0.79[/tex]Hence, the probability is 0.79.
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