Question

Assuming that the population is normally distributed, construct a 90% confidence interval for the population mean, based on the following sample size of n-6. 1, 2, 3, 4, 5, and 19 Change the number 19 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, using the formula or calculator. [ ] SHS (Round to two decimal places as needed.) Change the number 19 to 6, Find a 90% confidence interval for the population mean, using the formula or calculator. SHSRound to two decimal places as needed.) What is the effect of an outlier on the confidence interval? O A. O B. ° C. O D. 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. The presence of an outlier in the original data decreases the value of the sample mean and greatly inflates the sample standard deviation, widening the confidence interval. The presence of an outlier in the original data decreases the value of the sam ple mean and greatly decreases the sample standard deviation, narrowing the confidence interva The presence of an outlier in the original data increases the value of the sample mean and greatly decreases the sample standard deviation, narrowing the confidence interval.

Answer 1