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The normal range for a widely accepted measure of body size, the body mass index (BMI), ranges from 18.5 to 25.

Using the midrange BMI score of 21.75 as the null hypothesized value for the population mean, test this hypothesis at the .01 level of significance given a random sample of 30 weight-watcher participants who show amean BMI = 22.2 and a standard deviation of 3.1.

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at 10% significance level, there is... View the full answer

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