CsManny4035 CsManny4035

01-03-2018
Mathematics

contestada

A fair die is rolled 8 times.
a. what is the probability that the die comes up 6 exactly twice?
b. what is the probability

Respuesta :

Аноним Аноним

01-03-2018

a. P( first 2 are 6 and last 6 not 6) = 1/6 * 1/6 * (5/6)^6 = 0.0093027

there are 8C2 ways of getting 2 6's in 8 throws

= 8C2 = 28

So the required probability = 28 * 0.0093027 = 0.26 to nearest hundredth.

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