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The manufacturer of a patent medicine claimed that it was at least 90% effective in relieving an allergy for a period of 8 hours. In

The manufacturer of a patent medicine claimed that it was at least 90% effective in relieving an allergy for a period of 8 hours. In a sample of 200 patients, 140 did not relieved. Determine whether the manufacturer's claim is legitimate at 1% level of significan

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