Mathematics, 21.05.2020 03:57 sophiat17

Medical researchers conducted a national random sample of the body mass index (BMI) of 654 women aged 20 to 29 in the U. S. The distribution of BMI is known to be right skewed. In this sample the mean BMI is 26.8 with a standard deviation of 7.42. Are researchers able to conclude that the mean BMI in the U. S. is less than 27? Conduct a hypothesis test at the 5% level of significance using StatCrunch (directions) or calculating T and using the T-Distribution Calculator above. Based on your hypothesis test, what can we conclude?

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Medical researchers conducted a national random sample of the body mass index (BMI) of 654 women age...

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