python numpy ValueError: operands could not be broadcast together with shapes

In numpy, I have two “arrays”, X is (m,n) and y is a vector (n,1)

using

X*y

I am getting the error

ValueError: operands could not be broadcast together with shapes (97,2) (2,1)

When (97,2)x(2,1) is clearly a legal matrix operation and should give me a (97,1) vector

EDIT:

I have corrected this using X.dot(y) but the original question still remains.

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