Find a 98% confidence interval for the difference between the mean initial absorption rates.

The article “Effects of Waste Glass Additions on the Properties and Durability of Fired Clay Brickreports that the average initial rate of absorption for a sample of five clay bricks with fine glass particles added was 1299.8 with a standard deviation of 329.8, and the average for a sample of five bricks without glass particles added was 4500.8 with a standard deviation of 271.6.


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Proper sizing of a storm drainage system requires the plumber to know the maximum expected rainfall during a given period, and the _____.

a. designed rate of removal b. slope of the horizontal branches c. vertical conductor diameter d. size of the runoff receptacle or basin

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If a ration is not ____________________, then an animal will not eat it

Fill in the blank(s) with the appropriate word(s).

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In CAD, alternative shapes and sizes can be built into a part, sometimes called ____, and the designer can look at and analyze many "what if" scenarios.

A. analogies B. configurations C. sketches D. synectics

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The use of ____ in place of solid conductors has, in general, improved the loose connection problem.

a. fuses b. wire markers c. fiber optic cables d. stranded conductors

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