Confident that the error in the estimation
Let X be normally distributed random variable with mean u and variance s2= 4.84. Determine the the size of the sample required to be 90% confident that the error in the estimation is of u is at most 0.4.
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The resistance wire is placed horizontally in water at 20 degree celsius. Determine the outer surface temperature of the resistance wire in steady operation. For water take beta = 0.000365.
A valve connecting the two compartments is opened, and the water is allowed to come to equilibrium adiabatically. Calculate the entropy change for this isolated system.
The recommended daily dietary intake of calcium for adult men and pre-menopausal women is 1100 mg/day Calcium citrate , Ca3(C6H5O7)2 What mass of calcium citrate would be needed to provide the recommended daily intake of calcium?
A sheet of 0.001" thick BCC iron foil separates a high hydrogen content gas from a low hydrogen content gas at 725 degree C. Determine the concentration gradient of hydrogen and the flux of the hydrogen through the foil.
After 48 hours, the concentration of carbon 3.5 mm below the surface of the metal is 0.3 wt% C. At what temperature was the furnace operating?
When titrating a standardized solution such as NaOH, why is it important to perform each titration multiple times (think about why it's important to continue titration past the equivalence point.
Determine the concentration of hemoglobin solution knowing that its absorbance is 0.65. The pathlength is 1 cm and the extinction coefficient is 3.9 x 105 M-1cm-1.
A certain brand of phone is supposed to weight 25 grams. We assume that the phone weight follow a normal distribution with the standard deviation off s=3 grams.We buy 4 such phones and compute the mean weight in order to test H0 : u 25 g vs H1: u&
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Diagram the argument: "In the case of an unwanted pregnancy, you either get an abortion or you take care of the child once they are born
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