Compute 99 confidence intervals for the average daily

Assignment Help Basic Statistics

Reference no: EM13605383

All February Data was combined of 28 days of data

All August Data was combined of 31 days of data

August/ 2013

Mean: 79.032

Standard Deviation: 4.223

February/2013

Mean: 32.679

Standard Deviation: 8.188

August/2011

Mean: 80.226

Standard Deviation: 3.685

February/2011

Mean: 32.571

Standard Deviation: 7.772

August/2007

Mean: 79.227

Standard Deviation: 6.893

February/2007

Mean: 24.714

Stand: 9.404

1. Compute 99% confidence intervals for the average daily maximum temperature in February for each of the three years in which you collected data. How do they compare? Show all work.

2. Compute 99% confidence intervals for the average daily maximum temperature in August for each of the three years in which you collected data. How do they compare? Show all work.

3. Use the survey results to construct a 95% confidence interval estimate of the percentage of all adults who believe that there is a solid evidence of increasing temperature.

4. Identify the margin of error for this survey

5. Explain why it would or would not be okay for a newspaper to make this statement " Based on the results from a recent survey, the majority of adults believe that there is solid evidence of global warming"

6. Assume that you are a newspaper reporter, write a report of the survey results for your newspaper.

7. A common criticism of survey's is that the poll only a very small percentage of the population and therefore cannot be accurate. Is a sample of only 1501 adults taken from a population od 241,472,385 adults a sample size of that is too small? Write a brief explanation of why the sample size of 1501 is or is not too small.

Reference no: EM13605383

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