SOLUTION: A die is rolled 9 times and the number of times that two shows on the upper face is counted. If this experimentis repeated many times, find the mean for the number of twos.
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-> SOLUTION: A die is rolled 9 times and the number of times that two shows on the upper face is counted. If this experimentis repeated many times, find the mean for the number of twos.
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Question 747914: A die is rolled 9 times and the number of times that two shows on the upper face is counted. If this experimentis repeated many times, find the mean for the number of twos. Answer by reviewermath(1029) (Show Source):
You can put this solution on YOUR website! Let X = number of times that two shows on the upper face
X ~ Binomial(9, 1/6)
n = 9 and p = 1/6
mean, E(X) = np
=
= or
