"Courage lies in the wanting to know, which solves nothing, but which has within itself all solutions." -- (Francoise Mallet-Joris)
Numbers have interesting historical backgrounds, and there are many interesting stories behind just about any counting number. Here are just a few very brief tidbits relating to numbers. Some research will yield many interesting stories. Previous Tidbits have referenced the digits 1,2,3,4,5,6,7,8,9, and a few other numbers. Here are brief statements about some other numbers.
108: Tibetan sacred scriptures, the Tanjur and the Kanjur, contain 108 parts.
120: This number is connected with lifespan in Old Testament (Genesis 6:3)
153: The disciples of Christ catch exactly 153 fishes (John 21:11)
248: This number has a prominent place in Judaism as it represents the numerical value of the first two words of the fundamental religious expression of monotheism, "Hear, O Israel."
666: The number of the Beast (Revelation 13:8) in the Christian Bible.
What did Herkimer say to the noisy people who lived in the apartment below his?
Answer: Do under others as you would have them do under you.
Herky's words of wisdom:
Read contracts carefully. The fine print may be a clause for suspicion.
Make sure your dentist is honest. When he does an extraction, you should make sure you get the tooth, the whole tooth, and nothing but the tooth.
Reading: Section 10.2, pages 540-548.
Exercises: 10.39, 10.40 (page 549).
You are working in Section 10.2.
A particular brand of tire has a mean lifem =36,000 miles and a standard deviation s = 3,000 miles. A change in themanufacturing process makes the manufacturer think that the mean lifehas been increased. A random sample of 130 tires produces a mean lifeof 36,600 miles. Is there reason to believethat the manufacturing process change has increased the mean life ofthe tires?
Consider the collection of sample means x(bar)form samples of size 130. The Central Limit Theorem tells us that ifH0 is true,then
x(bar)= 36,000 ands x(bar)= 3,000/sqrt(130) =263.12.
How likely is a random sample of 130 with mean =36,600? The P-value
LINK TO SECTIONSUMMARIES
LINK TO STATISTICS HOMEPAGE
The Practice of Statistics, by Yates, Moore, McCabe. New York,W.H. Freeman and Company, 1999. (ISBN 0-7167-3370-6)
The Cartoon Guide to Statistics, by Gonick and Smith. NewYork, HarperCollins Publishers, 1993. (ISBN 0-06-273102-5)
How to Lie with Statistics, by Darrell Huff. New York, W.W.Norton & Company, 1982 (ISBN 0-393-09426-X)
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