Estimate a population proportion
Find the minimum sample size required to estimate a population proportion to within 0.05 with 95% confidence.
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Calculate: The temperature of the steam entering the turbine. The work input by the pump. The heat added in the boiler. The net work of the cycle. The thermal efficiency.
Find the lower end point of a 95% confidence interval for a population proportion based on a sample size of 100 if the sample proportion is 0.4. Give your answer to 2 decimal places.
By looking at the formula one might conclude that CO would have a large dipole moment, wen in fact it has a very small one. Based on the electron arrangement and the formal charge distribution, explain why the dipole moment of CO is so small.
An electron, initially traveling in the +x-direction with a speed of 4 x 105 m/s, enters a uniform electric field directed vertically upward. After traveling in this field for 3.5 x 10-7 s, the electron's velocity is directed 60º above the x-axi
If a fraction of steam is removed from the turbine at 2000kPa, passed through a closed water heater followed by a trap and then returned to the condenser to form a regeneration cycle.
For a certain transverse wave, the distance between two successive crests is 1.20 m and eight crests pass a given point along the direction of travel every 13.50 s. Calculate the wave speed.
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Into an evacuated 30L vessel is placed 0.1mol of n-butane dissolved in 0.9mol of n-hexane. if the vessel and its contents are kept at 298K, what is the pressure and the vapor and liquid compositions when equilibrium is achieved?
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