Question 11 4 pts Stratified samples are widely used to study large areas of forest. Based on sat...
Question 11 4 pts Stratified samples are widely used to study large areas of forest. Based on satellite images, a forest area in the Amazon basin is divided into 14 types. Foresters studied the four most commercially valuable types: alluvial climax forests of quality levels 1, 2, and 3, and mature secondary forest. They divided the area of each type into large parcels, chose parcels of each type at random, and counted tree species in a 20- by 25-meter rectangle randomly placed within each parcel selected. Here is some detail Forest Type Climax 1 Climax 2 Climax 3 Secondary Parcels 36 72 31 42 Sample Size We want to choose the stratified sample of n 18 parcels in total. Show your work for the following questions. (i). How many parcels should be sampled from each stratum? (ii). Use Random Digit Table (Table B, Tables.pdf), start at line 130, to select a random sample within stratum Climax 1. Be sure to explain how you assigned labels to parcels.
Question 11 4 pts Stratified samples are widely used to study large areas of forest. Based on satellite images, a forest area in the Amazon basin is divided into 14 types. Foresters studied the four most commercially valuable types: alluvial climax forests of quality levels 1, 2, and 3, and mature secondary forest. They divided the area of each type into large parcels, chose parcels of each type at random, and counted tree species in a 20- by 25-meter rectangle randomly placed within each parcel selected. Here is some detail Forest Type Climax 1 Climax 2 Climax 3 Secondary Parcels 36 72 31 42 Sample Size We want to choose the stratified sample of n 18 parcels in total. Show your work for the following questions. (i). How many parcels should be sampled from each stratum? (ii). Use Random Digit Table (Table B, Tables.pdf), start at line 130, to select a random sample within stratum Climax 1. Be sure to explain how you assigned labels to parcels.