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Locate a news article or report(in a popular news source such as Time, Newsweek, or the Wall Street Journal) in which a population mean is estimated from a sample. The article should include a margin of error and confidence interval.
Discuss the subject matter in the article, and the results and what the confidence interval and margin of error mean as they apply to the specific subject matter.
A cylindrical wooden storage vat has a 20 ft outside diameter. It is filled with 24 feet of brine with a specific gravity of 1.06. The wooden staves making up the vat are bound by flat steel bands evenly spaced vertically around the tank. Each band i..
calculate the size h of the two welds required to attach a plate to a frame as shown in figure. if the plate supports an inclined force P=50kn. use a factor safety of 3 and yield shear stress of 350 mpa for the weld material
For the compressor of Problem 115 calculate the heat rejected per minute to the jacket cooling water of each goy, and the heal rejected per minute to the inters: octet Assume that 50% of the friction power in each stage n transferred to the jacket..
a cylindrical container has a 4.5 inch diameter and weighs 0.4 lbf when empty. when the cylinder is filled to a depth
the work and the heat per degree change of temperature for a system executing a non-flow process are given by dwdt 80
a disk has a mass of 4kg and a radius of 90mm it is at rest when it is placed in contact with the belt which moves with
Helium gas enters a nozzle, whose isentropic efficiency is 95 percent with a low velocity, and it exits at 14.4 psia, 160 degrees F, and 940 ft/s. determine the temperature and pressure at the nozzle inlet.
the spring is unstretched when x0. if the body moves from the initial position x1100mm to the final position x2200mm a
Consider the top part of the balloon to be half of a spherical pressure vessel. What is the ratio of the normal stress across a vertical seam to the normal stress across a seam inclined 45 degrees?
a vintage automobile has an intake manifold vacuum gage in the dashboard instrument cluster. cruising at 20.1 ms 45 mph
two air flows are combined to a single flow. flow one is 1 m3s at 293 k and the other is 2 m3s at 473k both at 1 bar.
a 4-in. diameter disk shown weighs 10 lb. the disk is released at rest when theta30 degrees and rolls down the curved
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