"When you can measure what you are talking about and express it in numbers, you know something about it."  (Lord Kelvin, 18241907)
Henry Wadsworth Longfellow (18071882): He was an accomplished mathematician who created problems in poetic settings. He resigned his position of modern languages at Harvard University to find time to write  and his writing included some mathematics, a subject for which he had a deep appreciation. Can you find the number of water lilies in this problem created by Longfellow? Onethird of a collection of beautiful water lilies is offered to Mahadev, onefifth to Huri, onesixth to the Sun, onefourth to Devi, and six which remain are presented to the spiritual teacher.

When Herkimer was a waiter, what did he say to a customer who ordered a lobster tail? Answer: "Once upon a time there was a handsome lobster who ... " Things Herky would like to know: If 711 is open 24 hours a day, why are there locks on the doors? Is it true that cannibals don't eat clowns because they taste funny? 
ASSIGNMENT #36 Reading: Section 6.2 (pages 324329). Exercises: 6.18  6.23 (pages 330331). You can write answers neatly in the text. 
You are in Section 6.2.
The probability rules stated on page 325 arepretty much good old common sense. Do note that Rule #4 is true onlyif the events A and B are
A: Obtaining a total of 7. Prob (A) =6/36.
B: Obtaining a total of 9. Prob (B) = 4/36.
In this situation, A and B are disjoint events.That is, they cannot occur simultaneously. Hence
Prob (A or B) = 6/36 + 4/36 =10/36.
Now define events C and D as follows:
C: Obtaining a total less than 5. Prob(C) = 6/36.
D: Both up faces show a 2. Prob (D) = 1/36.
In this case, C and D are not disjoint since theycan occur simultaneously. That is, if both faces show a 2, then youhave a total of 4, which is less than 5. In this situation, event Cactually includes event D, and we have Prob (C or D) = 6/36, which isnot Prob (C) + Prob (D).
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Text:
The Practice of Statistics, by Yates, Moore, McCabe. New York,W.H. Freeman and Company, 1999. (ISBN 0716733706)
Supplemental books:
The Cartoon Guide to Statistics, by Gonick and Smith. NewYork, HarperCollins Publishers, 1993. (ISBN 0062731025)
How to Lie with Statistics, by Darrell Huff. New York, W.W.Norton & Company, 1982 (ISBN 039309426X)