5. Consider a multiple linear regression model of y on x, and x2, y = Bo + B1x1 + B2x2 +u, where u denotes the population error term. Suppose that all Gauss-Markov assumptions except homoskedasticity are satisfied. 'If the Breusch-Pagan test rejects the null hypothesis of homoskedasticity in the error term u, we can be certain that there is heteroskedasticity,' says Carmilla. Describe steps involved in obtaining a Breusch-Pagan test statistic, and explain to what extent you agree with Carmilla.

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