View solution: Testing Hypotheses. In Exercises 924, assume that a simple random sample

Chapter 8, Problem 21

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Testing Hypotheses. In Exercises 924, assume that a simple random sample has been selected and test the given claim. Unless specified by your instructor, use either the Pvalue method or the critical value method for testing hypotheses. Identify the null and alternative hypotheses, test statistic, Pvalue (or range of Pvalues), critical value(s), and state the final conclusion that addresses the original claim. Lead in Medicine Listed below are the lead concentrations (in g / g ) measured in different Ayurveda medicines. Ayurveda is a traditional medicalsystem commonly used in India. The lead concentrations listed here are from medicines manufactured in the United States. The data are based on thearticle Lead, Mercury, and Arsenic in US and Indian Manufactured Ayurvedic Medicines Sold via the Internet, by Saper, et al., Journal of the AmericanMedical Association, Vol. 300, No. 8. Use a 0.05 significance level to test the claim that the mean lead concentration for all such medicines is less than14 g / g.3.0 6.5 6.0 5.5 20.5 7.5 12.0 20.5 11.5 17.5