Truckloads of waste contaminated with cadmium may either be sent to a sanitary landfill or a hazardous
Question:
1. State the null and alternative hypotheses, and identify which represents the claim. Why?
2. Determine the type of test that you should use: left-tailed, right-tailed, or two-tailed. Explain your reasoning.
3. What sampling technique would you use to determine your sample of truckloads that will be tested this morning? Should a small sample or a large sample be used? Does it really matter?
4. What decision concerning your null hypothesis would result in a Type I error? What is the interpretation and the implication of this error? What about a Type II error? Obviously, you want to minimize the risk of both types of error when decision making. Which of these errors is more serious in this situation?
5. Suppose that the null hypothesis is rejected when you perform your hypothesis test. Assuming that a correct decision was made, what do you believe regarding the mean level of cadmium on today's truckloads? Give a complete interpretation.
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Related Book For
Complete Business Statistics
ISBN: 9780077239695
7th Edition
Authors: Amir Aczel, Jayavel Sounderpandian
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