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Product Warranty Period: A Markovian Approach to Estimation and Analysis of Repair and Replacement Costs--A Comment.

The Accounting Review 1983 58(4), 837-838
The article presents information on comments made by Franklin Lowenthal on the article "Product Warranty Period: A Markovian Approach to Estimation and Analysis of Repair and Replacement Costs," by K.R. Balachandran, R.A. Maschmeyer and J.L. Livingston. Lowenthal has said that the article by Balachandran, Maschmeyer and Livingston [1981] contains a mathematical error. The conclusion that the exponential distribution is the only distribution that leads to a failure rate constant during the warranty period is certainly correct. However, the mathematical formulation of the postulated condition of time independence as expressed in Equation (3) on page 117 in that paper is incorrect. The incorrect equation expresses a quite different but exceedingly fundamental concept of probability theory: independence of events. In fact, the word "independence," which generally refers to independence of events, is used by the authors immediately prior to their incorrect equation. A reader who attempted to combine the incorrect Equation (3) and correct Equation (1) would be led to an incorrect conclusion.

U.S. Securities Market Responses to Alternate Earnings Disclosures of Non-U.S. Multinational Corporations.

The Accounting Review 1983 58(2), 394-402
This study examines U.S. securities market responses to two annual reporting events of non-U.S, multinational corporations: (1) the annual earnings announcement made in the United States, and (2) the annual Form 20-K filing made with the U.S. Securities and Exchange Commission. The market reacts to the U.S. earnings announcements of these firms despite the fact that reported earnings amounts are typically not based on U.S. GAAP. Moreover, the intensity of the reactions to the U.S. earnings announcements of non-U.S. multinationals and a control sample of matched U.S. firms is comparable. No immediate response to the 20-K filing is observed.