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The Ankle Brachial Index(ABI) compares the blood pressure of apatient's arm to the blood pressure of thepatient's leg. A healthy ABI is 0.9or greater. In

The Ankle Brachial Index(ABI) compares the blood pressure of apatient's arm to the blood pressure of thepatient's leg. A healthy ABI is 0.9or greater. In astudy, researchers obtained the ABI of 187women with arterial disease. The results were a mean ABI of 0.89with a standard deviation of 0.16. At the 5%significancelevel, do the data provide sufficient evidence to concludethat, on average, women with arterial disease have an unhealthyABI?

The test statistic is t=______ ?

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