Question: This chapter is called: Introduction to hypothesis testing:The z Test. Q. The normal range for a widely accepted measure of body size, the body mass

This chapter is called: Introduction to hypothesis testing:The z Test.

Q. The normal range for a widely accepted measure of body size, the body mass index (BMI), ranges from 18.5 to 25. Using the mid-range 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 a mean BMI=22.2 and a standard deviation of 3.1.

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