STA 527 Turn in HW 9.docx - 1 HW 9(HT 1 With regards to...

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1 HW 9 (HT) 1. With regards to hypothesis testing, define the p-value. 2. Suppose that we were testing: Ho: 2.6 vs. Ha: 2.6 and our conclusion was Fail to Reject Ho. State the conclusion in words. 3. If we fail to reject Ho, what have we learned? 4. Company A claims that their tires have an average life of over 50,000 miles. Data for company A has been collected and summarized: 12 51,800 6,000 n x s . Test the claim at the .05 level. Ho: _______________ Test Statistic: ______________ Ha: _______________ p-value: __________________ Conclusion: __________________________ 5. An .05 level test is performed on the computer. The computer gives a p-value of .011. Do we reject or fail to reject Ho? Circle ONE! No Way to Tell Reject Ho Fail to Reject Ho
6. Suppose that we are testing Ho: 45 vs. Ha: 45 at the .05 level and we are going to collect 10 pieces of data and 1.2 . Determine the probability of Type II error for the alternative 46.25 T . ANSWER______________________ 7. True or False: a) If we fail to reject Ho, then we feel certain that Ho is true. T F b) When you collect more data, the probability of Type II error decreases. T F
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