STAT 245 Study Guide - Final Guide: Approximation Error, Statistical Hypothesis Testing, Problem Set
Document Summary
Again, construct a 90% confidence interval for the mean of x: again, suppose that someone you trust tells you that she knows for sure that the variance of x is exactly 2. 34. Now, construct an 80% confidence interval for the mean of x: for various reasons, some persons will decide to use a normal value to approximate a t value, for instance when constructing confidence intervals. 0. 05: the relationship between magazine cover price and longevity is being investigated. 0. 05: a pest survey of homes in toronto was conducted: in homes east of. Yonge street, 100 had rodents, 200 had arthropods, 300 had both, and 1200 had neither. In homes west of yonge street, 200 had rodents, 300 had arthropods, 100 had both, and 1200 had neither. Based on a recent study, you have determined that the mean of x is approximately 1. 23, and the variance of x is approximately 2. 34.
