(Coding) Use Python language to answer the following question.
In Fisher’s iris data http://www.randomservices.org/random/data/Iris.html,
consider the petal length variable for the samples of Versicolor and Virginica irises. Test the
following at the 10% significance level:
(a) H 0 : σ 1 = σ 2 versus H 1 : σ 1 ∕ = σ 2 .
(b) H 0 : μ 1 = μ 2 versus H 1 : μ 1 > μ 2 (assuming that σ 1 = σ 2 ).