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Test the claim that the percentage of uninsured patients

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A hospital director is told that 20% of the treated patients are uninsured. The director wants to test the claim that the percentage of uninsured patients is over the expected percentage. A sample of 420 patients found that 105 were uninsured. At the 0.05 level is there enough to support the director's claim? State the null and alternative hypotheses. One tail or two tailed.

Reference no: EM132856253

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