jmuth419 jmuth419
  • 30-10-2017
  • Mathematics
contestada

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

Respuesta :

Аноним Аноним
  • 30-10-2017
P(first 2 rolls = 6 and rest not 6)  = 1/6 * 1/6 * (5/6)^6 =   0.00930272

there are 8C2 ways  of obtaining  exactly 2 6's in 8 throws = 28 ways

so required probability is 0.00930272 * 28 =  0.26  to nearest hundredth
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