The body-mass index (BMI) divides a person's weight in kilograms (kg) by their height in meters squared (m²). Adults 20 years and older are considered overweight if their BMI is greater than 25 kg/ m². A random sample of 81 patients over 20 years old at a local hospital resulted in a mean BMI of 27 kg/ m² with a sample standard deviation of 3 kg/ m². What is the confidence interval for the population mean using a confidence level of 99%? 26.12 kg/ m² to 27.88 kg/ m² 26.22 kg/ m² to 27.78 kg/ m² 26.35 kg/ m² to 27.65 kg/ m² 26.14 kg/ m² to 27.86 kg/ m²
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