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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def block(seed):
 """ Return block of normal random numbers Parameters seed : {None, int} The seed to generate the noise.sd Returns -------- noise : numpy.ndarray Array of random numbers """

    num = SAMPLE_RATE * BLOCK_SIZE
    rng = RandomState(seed % 2**32)
    variance = SAMPLE_RATE / 2
    return rng.normal(size=num, scale=variance**0.5)