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3. The Daily Planet Transit Company claims that th...

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Question

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. 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: 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,A and B and their components are part of the original question, I don't know if I was to seperated but then it would not make sense if I just put B. part

 

Paper#9907 | Written in 18-Jul-2015

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