Species Versicolor Virginica Count 50 50 Mean 55.52 43.22 Median 55.50 44.00 SD 5.519 5.362 Min 45 30 Маx 69 56 Lower Quartile 51 40 Upper Quartile 59 47

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Irises Can measurements of the petal length of flowers
be of value when you need to determine the species of a
certain flower? Here are the summary statistics from
measurements of the petals of two species of irises.
(R. A. Fisher, “The Use of Multiple Measurements in
Axonomic Problems.” Annals of Eugenics 7 [1936]:
179–188)a) Make parallel boxplots of petal lengths for the two
species.
b) Describe the differences seen in the boxplots.
c) Write a 95% confidence interval for the difference in
petal length.
d) Explain what your interval means.
e) Based on your confidence interval, is there evidence
of a difference in petal length? Explain.

Species
Versicolor Virginica
Count
50
50
Mean
55.52
43.22
Median
55.50
44.00
SD
5.519
5.362
Min
45
30
Маx
69
56
Lower Quartile
51
40
Upper Quartile
59
47
Transcribed Image Text:Species Versicolor Virginica Count 50 50 Mean 55.52 43.22 Median 55.50 44.00 SD 5.519 5.362 Min 45 30 Маx 69 56 Lower Quartile 51 40 Upper Quartile 59 47
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