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Significance Testing of correlation coefficient.
A data set of size 19 has correlation coefficient of r = -0.432. Test the significance of r at the 5% level and at the 1% level.
the intensity of light from a light bulb, measure in watts (w), varies inversely as the square of the distance (d) from the light bulb. Suppose I is45 w/m(squared) when the distance is 6m.
using the substation Method or elimination Method. If you can show the work on how to solve these problem.
Describe the four models of democracy. Tell which one you think most closely resembles today's model in America. Which model do you prefer, and why?
If a car traveling 70 miles per hour can stop in 270 ft, how many feet will it take the same car to stop when traveling at 90 miles per hour?
The formula d = , where h equals the height, in feet, of the viewer's eyes, estimates the distance d, in miles, to the horizon from the viewer. Find the distance to the horizon for a person who eyes are 6 ft above the ground.
Work out what constraints in a maximum entropy problem will give rise to the true inverse Gaussian distribution.
A person sees a ship on the horizon. Due to the curvature of earth, how far is the ship from the lighthouse - estimate how high above sea level you are and find how far the ship is from you.
The downstream distance, D1 is 12 miles, and the upstream distance D2 is 9miles. Substitute these values in the ratio above and solve for C. Leave answer in fraction form.
find the dimensions that produce the maximum floor area for a one-story house that is rectangular in shape and has a perimeter
A certain type of bacteria can double its numbers every 20 minutes. Suppose 100 of these cells are in one culture dish and 250 of the cells are in another culture dish. Write and evaluate an expression that shows the total number of bacteria cells..
suppose you are going a weekend trip to a city that is d miles away. Develop a model that determines your round-trip gasoline costs. What assumptions or approximations are necessary to treat this model as a deterministic model?
Perform six iterations and find absolute approximate error with exact solution. Also solve this system by Gauss elimination method with partial pivoting in order to get exact solution.
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