Do this for two sample periods: 7/1926-12/1963, and 1/1964- 08/2017 (in each case the beta should be computed using the whole subsample, although in practice we use shorter time periods e. g. 5 years). How well does the CAPM work in the first sample? What happens in the second sample?

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.