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In a UK survey of a random sample of 281 working women who had children, 175 reported that they felt that having children had held back their career prospects. In a similar study of 138 women in Denmark, 65 reported that having children had held back their career.
(a) Produce a 95% confidence interval for the proportion of women in the UK who consider that having children held back their career prospects.
(b) Produce a 95% confidence interval for the proportion of women in Denmark who consider that having children held back their career prospects.
(c) How do the two confidence intervals compare?
The white precipitate remaining on the filter paper was readily soluble in ammonia solution. What two ions could have been present in the unknown?
Five different batches of a commercial plastic are sampled to determine the variation of inert additives between batches. Since each batch consists of several thousand pounds of material, several samples are taken from each batch to determine the ..
What must be the area of a parallel plate capacitor, with plates separated a distance d = 0.01 mm and relative permittivity of 4 for the dielectric between the plates to supply the same charge as the battery in (a)?
CHEN 623 - Applications of Thermodynamics to Chemical Engineering Exam. A continuous ideal gas stream with flow rate equal to 20 moles/s at 900 K and 10 bar enters an adiabatic reversible turbine operating at steady-state, from which it exits at 2...
Your company has two mixed reactors of unequal size for producing a specified product formed by homogeneous first order reaction. How these reactors should be connected to achieve a maximum production rate.
Temperature variations are small over the shaft cross section. Evaluate the temperature and conduction heat rate at the shaft-pipeline joint (x = 0) and at the shaft-ground interface (x = 1 m)
The scale factors used are 1 cm = 0.03 T and 1 cm = 200 At/m. Find the hysteresis loss in watts.
Explains the mechanism of catalysis.
Find the per-unit voltage regulation when the transformer is supplying full load at 110 V and 0.9 lagging power factor.
A suitable storage place must be geologically stable long enough for the activity of plutonium-239 to decrease to 0.1% of its original value. How long is this for plutonium-239?
What is the optimum practical shape for an above-ground dwelling to minimize the heat losses through the building fabric? When is (or was) this optimum shape used? Why is this optimum shape seldom used in richer societies?
Compute the worst voltage regulation and the power factor at which it occurs, when the transformer is delivering rated output at rated secondary terminal voltage of 240 V. Sketch the corresponding phasor diagram.
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