Spotted by Difei Qin.
These include: - Use consistent parametrization for MGF of the geometric distribution. - Use <= instead of < for indicator function in the discrete uniform distribution. - Add a missing "dx" in definition of continuous expectation. - Fix typo in constant expectation.
In 18.1, the equation of the conditional variance of beta hat lacked a square operation in the denominator. Moreover, at the end of 18.1, the statement about the estimator under the assumption or Normality now includes a more precise formulation. Contributed by Travis Walter.