The numpy package will be needed for this question. You may refer to https://numpy.org/ for more details about the package, that is widely used in AI, machine learning, data science, etc. Given a list of integers: b = [[[1, 2], [3, 4], [5, 6]], [[7, 8], [9, 10], [11, 12]]], you need to convert it to a numpy array first, and then print the shape, mean, and variance value of this array using numpy library functions and attributes.