Answer to Question #247066 in Statistics and Probability for Kudzie

Question

2.1  The width of a confidence interval is a measure of its precision. The narrower the confidence interval, the more precise is the interval estimate, and vice versa. Describe any three aspects that influence the precision of the width of a confidence interval of a single population mean.                                                                                                                    (5)    

Answer 1

There are three factors that influence the size of the confidence interval at each confidence level. They are as follows: percentage, population, and sample size. When the sample size is bigger, the likelihood of the responses representing the population increases. One's accuracy is based on the proportion of his sample that recognizes the corresponding answer.