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Statistics Questions

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Question;Statistics Questions2. A 95% confidence interval infers that the population meana. is between 0 and 100%b. is within + and - 1.96 standard deviations of the sample meanc. is within + and - 1.96 standard deviations of the population meand. is within + and -.25 standard deviations of the sample mean3. College officials indicate that at least 70% of the voting student population supports the proposed tuition and fee increase. If the 95% confidence interval is 0.75 to 0.85, what conclusion can be drawn based on a 95% level of confidence?a. 70% is not in the interval, need to take another sampleb. 70% is not in the interval, so assume it will not be supportedc. 70% is below the interval, so assume it will be supportedd. Since this estimate was not based on the voting student population, we cannot make a decision4. A sample of twenty-five is selected from a known population of one hundred elements. What is the finite population correction factor?a. 8.66b. 75c. 0.87d. cannot be determined5. Which concept is a test statistic used to test a hypothesis about a population mean?a. the alpha levelb. the Type II errorc. the population meand. the z statisticQuestions 6 and 7 pertain to the following data set:6. Based on the Nielson Ratings, the local CBS affiliate television station claims its 11:00 pm newscast reaches 41% of the viewing audience in the market area. In a survey of 100 viewers, 36% indicated that they watch the late evening news on this local CBS affiliate televisions station. What is the research hypothesis?a. The population proportion is equal to 36%b. The population proportion is equal to 41%c. The population proportion is not equal to 36%d. The population mean is equal to 41%7. What is the null hypothesis?a. The population proportion is equal to 36%b. The population proportion is equal to 41%c. The population proportion is not equal to 41%d. The population mean is not equal to 41%

 

Paper#62251 | Written in 18-Jul-2015

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