Question: The mean and standard deviation of a random sample of

The mean and standard deviation of a random sample of n measurements are equal to 33.9 and 3.3, respectively.
a. Find a 95% confidence interval for µ if n = 100.
b. Find a 95% confidence interval for µ if n = 400.
c. Find the widths of the confidence intervals you calculated in parts a and b. What is the effect on the width of a confidence interval of quadrupling the sample size while holding the confidence coefficient fixed?

View Solution:


Sale on SolutionInn
Sales0
Views40
Comments
  • CreatedMay 20, 2015
  • Files Included
Post your question
5000