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Section 7.3: Hypothesis Testing for Mean (Small Sa...

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Section 7.3: Hypothesis Testing for Mean (Small Samples) 3. The Daily Planet Transit Company claims that the mean waiting time for train during rush hour is less than 7 minutes. As random sample of 20 waiting times has a mean of 5.2 minutes with a standard deviation of 2.1 minutes. Assume the distribution is normally distributed. a. Use the critical value t0 method from the normal distribution to test for the population mean ?. Test the company?s claim. (References: example 1 though 5 pages 397 - 401, end of section exercises 23 ? 28 pages 404 - 405) (6 points) Answer: Given data 1. H0 : Ha : 2. ? = 3. Test statistics: 4. P-value or critical z0 or t0. 5. Rejection Region: 6. Decision: 7. Interpretation: b. Use the critical value t0 method from the normal distribution to test for the population mean ?. Test the company?s claim at the level of significance ? = 0.01 (References: example 1 though 5 pages 397 - 401, end of section exercises 23 ? 28 pages 404 - 405) (6 points) Answer: Given data 1. H0 : Ha : 2. ? = 3. Test statistics: 4. P-value or critical z0 or t0. 5. Rejection Region: 6. Decision: 7. Interpretation,Please see attached document to see the 7.3 Question 3 with the a) and b) actual sub questions

 

Paper#11617 | Written in 18-Jul-2015

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