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OpenStudy (anonymous):
a die is rolled 9 times and the number of times that 2 shows on the upper face is counted. if this experiment is repeated many times, find the mean for the number of twos.
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OpenStudy (geometry_hater):
mean = (number of trials)*(probability of getting a 2)
OpenStudy (geometry_hater):
i dont think its possible to answer the question without knowing how many times the dice was flipped vs the number of times it landed on 2
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