90% confidence interval for the difference in mean number of species between unlogged and logged plots.
90% confidence interval for the difference in mean number of species between unlogged and logged plots.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
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1) "Conservationists have despaired over destruction of tropical rain forest by logging, clearing, and burning." These words begin a report on a statistical study of the effects of logging in Borneo. Here are data on the number of tree species in 12 unlogged forest plots and 9 similar plots logged 8 years earlier:
Unlogged 22 18 22 20 15 21 13 13 19 13 19 15
Logged 17 4 18 14 18 15 15 10 12
Use the data to give a 90% confidence interval for the difference in mean number of species between unlogged and logged plots. Compute degrees of freedom using the conservative method.
Interval:
to
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