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Suppose Seitz produces pulleys that are specified to be 50 millimeters (mm) in diameter. A large batch of pulleys is made in week 1 and another is made in week 5. Quality control people want to determine whether there is a difference in the variance of the diameters of the two batches. Assume that a sample of six pulleys from the week 1 batch results in the following diameter measurements (in mm): 51, 50, 48, 50, 49, 51. Assume that a sample of seven pulleys from the week 5 batch results in the following diameter measurements (in mm): 50, 48, 48, 51, 52, 50, 52. Conduct a test to determine whether the variance in diameters differs between these two populations. Why would the quality control people be interested in such a test? What results of this test would you relate to them? What about the means of these two batches? Analyze these data in terms of the means and report on the results. Assume that pulley diameters are normally distributed in the population.
a 40-mph wind below past your house speeds up as it flows up and over the roof.nbspif the elevation effects are
air is considered as an ideal gas. dont use gas table for gas properties just assume that both cv and cp are constants.
The result is a set of four scalar equations. When the translational equations are expanded, and appended to the first four equations, a system of seven trigonometric equations in the six unknown angles is derived. Obtain that system of seven equa..
Energy balance, property tables, phase changes. Consider water in a pot on an alien planet. You will the pot with 1.002 L (.001002 m3) of water initially at 20°C and 75 kPa (their atmospheric pressure is different than ours). How much mass is in the ..
estimate in mm your uncertinity in locating the position of a resonance level. are the resonances sharp located at a
Air enters a turbine at 40 kN/m2, 900 C, and leaves at 10 kN/m2. The flow is reversible and adiabatic. Inlet velocity is quite low and outlet velocity is 150 m/s through a cross-sectional area of 0.20 m2. Calculate the power output in kW.
it is desired to prepare an emulsion in a baffled 4 in number tank using standard flat-blade disc turbine. the tank is
a horizontal cantilever of length l supports a load w uniformly distributed along its length. the cantilever is proped
assuming that within metal crystals the atoms can be considered as hard spheres in contact sketch arrangement of atoms
a 0.3 kg bullet is fired into a 3.6 kg wooden block and becomes embedded in it. knowing that the block and bullet move
What are the standard S.I. And English based units for reporting strain? What are the standard S.I. And English based units for reporting Youngs Modulus?
A cylindrical metal specimen having an original diameter of 10.8 mm and gauge length of 50.80 mm is pulled in tension until fracture occurs. The diameter at the point of fracture is 6.60 mm and the fractured gauge length is 76.14 mm. Calculate the du..
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