The full step-by-step solution to problem: 79E from chapter: 3.5 was answered by , our top Statistics solution expert on 07/28/17, 07:57AM. The answer to “Product codes of two, three, four, or five letters are equally likely. What are the mean and standard deviation of the number of letters in the codes?” is broken down into a number of easy to follow steps, and 27 words. This textbook survival guide was created for the textbook: Applied Statistics and Probability for Engineers , edition: 6. Applied Statistics and Probability for Engineers was written by and is associated to the ISBN: 9781118539712. This full solution covers the following key subjects: Codes, letters, likely, deviation, equally. This expansive textbook survival guide covers 97 chapters, and 2005 solutions. Since the solution to 79E from 3.5 chapter was answered, more than 327 students have viewed the full step-by-step answer.