Elementary statistics

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Mathematics

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Project #3 – MAT 151 This is an individual project. Answer the following questions in complete sentences and in your own words. Please show your work this time on how you get numerical answers. List out each step that you did in detail. The weight of the project is equivalent to a test grade. Please put a page break between answers for each section of questions. The answers for each question will use the following rubric for grading purposes. 10 Points Understood concept and wrote a coherent and appropriate answer with enough detail. AND Showed work and correct numerical answer AND No spelling errors. 7 Points Not a full explanation of statistical concept, had the basic idea, but not enough detail in the answer. OR Right numerical answer, but didn’t show work on how they got the answer. OR Spelling errors. 4 points Wrote an incoherent and not complete answer without enough detail. AND Wrong numerical answer and didn’t show work. AND Spelling errors. 1 Point Right numerical answer, but: No sentences, No explanation of answer, No meaning behind the numbers. Section #1 1. State the hypotheses and identify the claim. 2. Given an =0.05, what type of test is used (left tailed, right tailed or two-sided tail) and what is the critical z-value? 3. Compute the test value. 4. Make the decision. 5. Summarize the results. Section #2 Test to determine if the level of dissolved oxygen in this river is below the 5.4 milligrams per liter that is recommended by the US Fish and Wildlife Service. Carry out an appropriate test of this claim at the α=0.05 level. 1. State the hypotheses and identify the claim. 2. Given an =0.05, what type of test is used (left tailed, right tailed or two-sided tail) and what is the critical t-value? 3. Compute the test value. 4. Make the decision. 5. Summarize the results.
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