Describe the differences seen in the boxplots

Reference no: EM131422451

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)

	Species
	Versicolor	Virginica
Count	50	50
Mean	55.52	43.22
Median	55.5	44
SD	5.519	5.362
Min	45	30
Max	69	56
Lower Quartile	51	40
Upper Quartile	59	47

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 this difference.

d) Explain what your interval means.

e) Based on your confidence interval, is there evidence of a difference in petal length? Explain.

Reference no: EM131422451

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