Below is a problem that has me stumped. Would be grateful for an answer.
A random sample of size n is collected from a population, and from the data collected a 95% confidence interval for the mean of the population is computed.. Which of the following changes in condition would definitely result in a confidence interval with a smaller width than the one computed. A – and increased in the population standard deviation B - a decrease in the confidence level requested from 95% - 90% C - A decrease in the size of the sample obtained D - All of the above E - None of the above . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
