计量经济学问题，请大侠们指点

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assignment中的题目，碰到有点难搞的！
let us consider somespecific models based on theories about the predictability of oil prices. This time, estimate lspott on lfuturest-1and lspott-1. Call this Model1.

ThTthe theory claims that changes in the spot price of oil are unpredictable,and therefore the best forecast is the current spot price. That is,



lspott = β0 + lspott-1 + errort.


The equation above says that the spot price of oil is a randomwalk with drift: its current value depends on a constant, its value last period(with coefficient 1) and some random error. Perform a test for this restrictionto Model 1 to see whether this alternative theory holds.

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关键词：经济学问题 计量经济学 计量经济 经济学 coefficient 计量经济学 大侠 指点

这里除了F-test，老师说还可用wald test， 用EVIEW 搞定，但是看了lecture notes, 发现wald test是针 对X variable的，比如这道题里的lfutures，但是这里问的是y （t-1）对用y的情况， 请问大侠们该怎么perform test？

bu hao yi si .wo ye bu dong