Size of trees in the eastern and western halves. Refer to the previous exercise. The Wade Tract can also be divided into eastern and western halves. Here are the DBHs of 30 randomly selected longleaf pine trees from each half: EWPINES 23.5 43.5 6.6 11.5 17.2 38.7 2.3 31.5 10.5 23.7 East 13.8 5.2 31.5 22.1 6.7 2.6 6.3 51.1 5.4 9.0 43.0 8.7 22.8 2.9 22.3 43.8 48.1 46.5 39.8 10.9 17.2 44.6 44.1 35.5 51.0 21.6 44.1 11.2 36.0 42.1 West 3.2 25.5 36.5 39.0 25.9 20.8 3.2 57.7 43.3 58.0 21.7 35.6 30.9 40.6 30.7 35.6 18.2 2.9 20.4 11.4 Using the questions in the previous exercise, analyze these data.
Lecture 11: Difference in Population Proportions 1. Independent Samples Scenario -‐ Two samples are independent samples when the measurements in one sample are not related to the measurements in the other sample. -‐ Example: 1. Random samples taken separately from 2 populations and same response variable is recorded for each individual. 2. One random sample is taken and a variable is recorded 3. Participants randomly assigned