bradyanime bradyanime

03-04-2017
Mathematics

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Jana has a number cube numbered 1 to 6. She plans to roll the cube 78 times. Predict the number of times Jana will roll a 2.

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LammettHash LammettHash

03-04-2017

The probability of rolling a 2 is [tex]\dfrac16[/tex] for any one roll of the cube.

In 78 rolls, the expected number 2s would be [tex]\dfrac{78}6=13[/tex].

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