A drugs company produced a new pain-relieving drug for migraine sufferers and its advertisements stated that the drug had a 90% success rate. A doctor doubted whether the drug would be as successful as the company claimed. She prescribed the drug for 15 of her patients. After six months, 11 of these patients said that their migraine symptoms had been relieved by the drug. 1. Test the drug company’s claim, at the 5% level of significance 2. Should the doctor continue to prescribe the drug?

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