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Have you ever been frustrated because you could not get a container of some sort to release the last bit of its contents? The article "Shake, Rattle, and Squeeze: How Much Is Left in That Container?" (Consumer Reports, May 2009: 8) reported on an investigation of this issue for various con- sumer products. Suppose five 6.0 oz tubes of toothpaste of a particular brand are randomly selected and squeezed until no more toothpaste will come out. Then each tube is cut open and the amount remaining is weighed, resulting in the following data (consistent with what the cited article reported): .53, .65, .46, .50, .37. Does it appear that the true average amount left is less than 10% of the advertised net contents?a. Check the validity of any assumptions necessary for test-ing the appropriate hypotheses.b. Carry out a test of the appropriate hypotheses using asignificance level of .05. Would your conclusion changeif a significance level of .01 had been used?c. Describe in context type I and II errors, and say whicherror might have been made in reaching a conclusion.
Two identical spheres of radius 8 in . and weighing 2 lb on the surface of the earth are placed in contact. find the gravitational attraction between them .
An equal-tangent crest vertical curve is designed for 70 mi/hr. The high point is at elevation 1011.4 ft. The initial grade is +2% and the final grade is -1%. What is the elevation of the PVT? Solve this problem with the parabolic equation rather tha..
An irregular piece of unknown ore weighs 7 lb in air and was found to weigh 5.6 lb in water when submerged.
A dam has a parabolic shape z/zo = (x/xo)2, with xo = 10 ft and zo = 24 ft. The fluid is water, gamma = 62.4 lbf/ft3, and atmospheric pressure may be omitted.
A before-and after speed study was conducted to determine the effectiveness of a series of rumble strips installed approaching a toll plaza to reduce approach speeds to 40 mi/h.
A 68 kg woman is planning to bicycle for an hour. If she is to meet her entire energy needs while bicycling by eating 30 g chocolate candy bars, determine how many candy bars she needs to take with her
Supporting soil has a unit weight of 125 pcf. The results of laboratory tests on the soil samples indicated that the supporting soil's cohesion and angle of internal friction are 1200 psf and 25 degrees, respectively.
if the aircraft is encountering a steady side wind of speed vw=10 mi/hr , at what angle (a) should the pilot direct the aircraft so that the absolute velocity is parallel to the runway
Consider a portion of the sheet that is 2 in.x 2 in and 0.04 in. thick when the loads are acting. Determine the in-plane x-dimension of this portion of the sheet if these loads are released
Heat transfer through the walls and roof is estimated to be 5 40 kJ/hr per degree temperature difference between the inside and outside. a. If the outside temperature in the winter is - 5 C, what power required to drive the heat pum p (kJ/hr
the aeropress manual coffee and espresso maker is shown in figure 1. answer the following questions and clearly state
a 6 inch soil cement base and an 8 inch crushed stone subbase, which truck will cause more pavement damage?(assume drainage coefficients are 1.0)
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