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Test2 - Math 350 – Test 2 – Chapters 7& 10 Printed...

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Unformatted text preview: Math 350 – Test 2 – Chapters 7 & 10 Printed Name: Calculators are allowed on this test...neighbors are not ! Round answers (where appropriate) to 4 places after the decimal. Grade of 100 1 A soil scientist is interested in studying the pH level in the soil for a certain field. In particular, she is going to examine a random sample of soil samples and measure their pH levels to assess if the mean field pH level is neutral (that is, equal to 7) versus the alternative hypothesis that the mean pH level is acidic (that is, less than 7). She observed the following pH levels in the sample: 5.8, 6.3, 6.9, 6.2, 5.5. Test these hypotheses using a significance level of 5%. A 6 pts State the Hypotheses. H : H 1 : ............................................................................................................................ B 2 pts Sketch the Rejection Region(s). ............................................................................................................................ C 6 pts Calculate the test statistic (round to 3 places after the decimal) and the p-Value. Test Statistic p-Value ............................................................................................................................ D 5 pts Decision Reject H Fail to Reject H Accept H ............................................................................................................................ E 5 pts Conclusion. Dr. Emmert Summer 2011 I of IV Points Earned of 24 Math 350 – Test 2 – Chapters 7 & 10 2 Patients with glaucoma, an eye disease that is manifested by high intraocular pressure (IOP) and can cause blindness, are on a regimen of two medications, A and B. The purpose of the study was to determine whether the patients can change to medication C without much change in their intraocular pressure (IOP). Patientsthe patients can change to medication C without much change in their intraocular pressure (IOP)....
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Test2 - Math 350 – Test 2 – Chapters 7& 10 Printed...

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