predicted probability = 0.0493 %3D O predicted probability = 0.0062 %3D O predicted probability = 0.3543 predicted probability = 1.4867 %3D
predicted probability = 0.0493 %3D O predicted probability = 0.0062 %3D O predicted probability = 0.3543 predicted probability = 1.4867 %3D
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question

Transcribed Image Text:predicted probability = 0.0493
%3D
O predicted probability = 0.0062
%3D
predicted probability = 0.3543
%3D
predicted probability = 1.4867
%3D

Transcribed Image Text:A Logistic Regression model was used for classifying common brushtail
possums into their two regions. The outcome variable takes value 1 if the
possum was from Victoria and 0 otherwise. We consider five predictors:
sex_male (an indicator for a possum
being male), head length, skull width, total length, and tail length. A summary
table is provided below.
Estimate
Std. Error
Z value
Pr(>||I)
(Intercept)
33.5095
9.9053
3.38
0.0007
sex_male
-1.4207
0.6457
-2.20
0.0278
0.0231
skull_width
total_length
tail_length
-0.2787
0.1226
-2.27
0.5687
0.1322
4.30
0.0000
-1.8057
0.3599
-5.02
0.0000
Suppose we see a brushtail possum at a zoo in the US, and a sign says the
possum had been captured in the wild in Australia, but it doesn't say which
part of Australia.
However, the sign does indicate that the possum is female, its skull is about
53 mm wide, its total length is 93 cm and its tail is 40 cm long. What is the
predicted probability that this possum is from Victoria? Choose an option
that is closest to your answer.
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