Statistical Sciences 2035 Study Guide - Point Estimation, Sampling Distribution, Sleep Deprivation

• School: Western University
• Department: Statistical Sciences
• Course: Statistical Sciences 2035
• Professor: Steve Kopp

Document Summary

Things start off as a 2-sample problem: x1 = sample data from population1 x2 = sample data from population 2. In a paired differences situation, subjects/people in an experiment (or sample) are matched in pairs: that is, you use the same group of subjects/people in both samples (thus, n1 = n2 = n) Calculate the difference in each matched pair: d = x1 x2. Then calculate the mean and std dev of d d d n sd dd. You have now taken a 2-sample problem and reduced it to a 1-sample problem. You can calculate ci"s for d = 1 2 using. A 100(1 )% ci for d = 1 2 is d . A researcher asked 16 subjects to perform several tasks before and after 24 hours of sleep deprivation. One task involved the subjects lifting weights until muscle failure.