Typos in the textbook

• Page 9: the formula for P(Z_{2n}=k) seems incorrect. try n = 1, k = 0. A more plausible formula is gotten by replacing "2n-k choose k" by "2n-k choose n". Correct formula not traced down at this moment. I heard that a textbook by Sheldon Ross may have the correct answer.
• Page 44: Example 2.4 as it sits there is entirely confusing. replace 1_A<=t by 1_A^{-1}(B) for B a Borel set.
• Page 90: First formula, summation is over m, not k, so at the bottom of summation signs write m=k instead of k=m.
• Page 121: (Bad error) First formula: inequality is wrong, should be >= instead of <=.
• Page 132: Problem 4.23, should read: +2Cov(X,Y), rather than -2Cov(X,Y)