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The president of a corporation ensures that 20% of its employees receive annual promotions. If this percentage is not observed, the promotion process should be
The president of a corporation ensures that 20% of its employees receive annual promotions. If this percentage is not observed, the promotion process should be revised. Should this revision be undertaken if 28 out of a sample of 120 employees received promotions this year? Use 0.05 as level of significance.
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