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11-05-2017
Mathematics

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Jenna flips two pennies 105 times how many times can she expect those coins to come up heads

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11-05-2017

The more observations you make the closer and closer the experimental probability will approach the theoretical probability. In this case the theoretical probability is:

P(HH)=(1/2)(1/2)=1/4

So in 105 trials one would expect to get two heads:

105(1/4)=26.25 times.

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