Overwhelming evidence that mean viscosity
An engine oil supposed to have a mean viscosity of µ = 85.0. A sample of n=25 viscosity measurements resulted in a sample mean of 88.3 and sample std.=7.49. Is there overwhelming evidence that mean viscosity is not as stated?
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A 3 m x 3 m x 2.4 m room losses heat through the walls at a rate of 520 W. Determine the final temperature of the room after 2 hrs with the electric baseboard heater drawing 120 V and 4.5 A. The initial temperature of the room is 15 °C
Half a mole of a monoatomic ideal gas is initially at 1000 K and a pressure of 20 bar. It is expanded adiabatically and reversibly until the final temperature is 400 K. Calculate the final volume and pressure.
The data below are the temperatures on randomly chosen days during a summer class and the number of absences on those days. Construct a 95% confidence interval about the slope of the true least-squares regression line, for the data below, given th
A piston-cylinder device, with a free floating piston, contains 2 kg of water as a saturated liquid with a pressure of 400 kPa. The water is then heated to a saturated vapor. What is the amount of boundary work?
What compressive stress is required at zero strain? If the compressive stress is removed what is the permanent strain?
To avoid any high-speed imbalance in a rotating shaft; it needs to have a variance of its diameter below 0.0004 mm2. The shaft diameter has been measured at 16 equally distributed locations, with a standard deviation of 0.018 mm.
A mass m = 4.0kg is connected, as shown, by a light cord to a mass M = 6.0kg, which slides on a smooth horoizontal surface. the pulley rotates about a frictionless axle and has a radius R = .12m and a moment of inertia I = .090kg the cord does not
Derive a relationship that can be used to find the maximum thickness of the coating that can be applied such that it will not drip before it cures.
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