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the ankle brachial Index (ABI) compares the blood preasure of a patients arm to the blood...

the ankle brachial Index (ABI) compares the blood preasure of a patients arm to the blood preasure in their leg. A healthy ABI is 0.9 or greater. In a study, reseachers obtained the ABI of 187 women with the arterial disease. The results were a mean of ABI of 0.90 with a standard deviation of 0.15. At the 10% signifiance level, do the data provide sufficient evidence to conclude that, on average, women with arterial disease have an unhealthy ABI?
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