Confidence interval for the population mean cost
A random sample of 55 standard hotel rooms in the Philadelphia, PA area has a mean nightly cost of $154.17 and a standard deviation of $38.60. Construct a 99% confidence interval for the population mean cost.
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What are the requirements that must be met for a regression analysis? How is the analysis affected if these requirements are violated ("The test won't work or be valid" is not an acceptable answer)?
Describe some benchmarking performance metrics for the airline industry.
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The marketing manager of a larger supermarket chain would like to use shelf space to predict the sales of pet food. A random sample of 12 equal-sized stores is selected, with the following results. Construct a scatter plot. For these data, bo=145 a
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On a sphere with radius a there is an electric charche sigma=sigmazero*cos(theta). Determine the electrostatic potential for all points on the z-axis. (solve with integral over R^3 dV* chargedistribution* Greensfunction).
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