Using SPSS: Take a random sample of 100. Calculate the 95% confidence interval for the variable.
Using SPSS: Take a random sample of 100. Calculate the 95% confidence interval for the variable.
Calculate a 90% confidence interval.
Take another random sample of 400.
Calculate the 95% confidence interval.
Calculate a 90% confidence interval.
Explain how different levels of confidence and sample sizes affect the width of confidence interval