Standard deviation of all such electric light bulbs
The standard deviation of the lifetime of a sample of 15 electric light bulbs was computed to be 98 hours and the lifetime duration follows a normal distribution. Find a 95% CI for the standard deviation of all such electric light bulbs.
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What voltage would you expect based on the joule tomson coefficient value for CO2 if op amp is set to 100 for a pressure drop of 90 psi across frit for this gas?
By what factor does the rate of the reaction with the following rate law change if the concentrations of NO2 andCl2 are doubled. Rate =k[NO2]2[Cl2]. Express answer as whole number.
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The intensity (in W/m2) of one sound is 6.94 times as great as the intensity of another sound. Relative to the quieter sound, what is the intensity level ß of the louder sound?
The wall thickness of 20 glass 2-liter bottles was measured by a quality control engineer. The sample mean was Xbar=4.05 millimeters, and the sample standard deviation S=0.08 millimeters. Computer a 95% prediction interval on the wall thickness of
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