Question: 1: Briefly explain. Suppose a variable measured at t can forecast future stock return at t+1. a) Does this result reject the random walk hypothesis?

1: Briefly explain. Suppose a variable measured at t can forecast future stock return at t+1. a) Does this result reject the random walk hypothesis? b) Some argue that the test of the random walk hypothesis discussed in (a) is subject to the joint hypothesis problem. What is this

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