Assuming that the population is normally distributed, construct a 90 % confidence interval for the population mean, based on the following sample size of n equals 6. 1, 2, 3, 4 comma 5 , and 23 Change the number 23 to 6 and recalculate the confidence interval. Using these results, describe the effect of an outlier (that is, an extreme value) on the confidence interval. Find a 90 % confidence interval for the population mean. Change the number 23 to 6. Find a 90 %confidence interval for the population mean. What is the effect of an outlier on the confidence interval? 

A. The presence of an outlier in the original data decreases the value of the sample mean and greatly inflates the sample standarddeviation, widening the confidence interval. 

B. The presence of an outlier in the original data decreases the value of the sample mean and greatly decreases the sample standard deviation, narrowing the confidence interval. 

C. The presence of an outlier in the original data increases the value of the sample mean and greatly inflates the sample standard deviation, widening the confidence interval. 

D. The presence of an outlier in the original data increases the value of the sample mean and greatly decreases the sample standarddeviation, narrowing the confidence interval.

Answer rating: 100% (QA)

The present of an oulier in orig... View the full answer