Question
i need help in these three problems
Use the sample information 34, -4, n 10 to calculate the following confidence intervals for assuming the sample is from a normal population. (a) 90 percent confidence (Round your answers to 4 decimal places.) The 90% confidence interval is from| to (b) 95 percent confidence. (Round your answers to 4 decimal places.) to The 95% confidence interval is from (c) 99 percent confidence. (Round your answers to 4 decimal places.) e) 9 percent confidence. Round your answers to 4 decimal places) The 99% confidence interval is from to (d) Describe how the intervals change as you increase the confidence level
Explanation / Answer
Using http://www.danielsoper.com/statcalc/calculator.aspx?id=96 calculator we can find all the three conifidence interval
90% 31.68128<=x<=36.31872
95% 31.13857<=x<=36.86143
99% 29.88925<=x<=38.11075
As we move with percentage we see the range increases