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ALgebra

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A spinner has five regions numbered 1 through 5. If the spinner is spun 100 times, we would expect about 20 of the outcomes to be Region 1. It can be determined that the spinner is unbalanced if x, the number of outcomes that result in Region 1, satisfies
x-20/4 ¡Ý 1.645. Describe the number of outcomes that determine an unbalanced spinner that is spun 100 times.

How would i set this up?

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