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Chi-square tests are great to show if distributions differ or if two variables interact in producing outcomes. What are some examples of variables that you might want to check using the chi-square tests? What would these results tell you?
A plane flying horizontally at an altitude of 3 mi and a speed of 420 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 4 mi away from the station.
What is the probability that a randomly selected automobile manufactured by the company will have a defective microprocessor?
Evaluate the velocity vector at a particular point, vector projection of acceleration and the length of the curve between two points.
a metal sculptor has a solid bronze sphere with a radius of 10 inches. She melts the sphere and casts a hollow sphere with an inner radius of 10 inches. What is the thickness of the shell of the hollow sphere?
Suppose that a telemarketer uses random-digit dialing equipment to call three residential telephone numbers at random. There is a 20% chance of reaching a live person with each call, and the calls are independent. (i) What is the probability that ..
Show that a k-connected graph with at least 2k vertices contains a matching of size k. Is this best possible?
State the null & alternative hypotheses in words
A poster is to have an area of 150 in2 with 3 inch margins at the bottom and sides and a 5 inch margin at the top. What dimensions will give the largest printed area? (Give your answers correct to one decimal place.)
The circumference of a sphere was measured to be 70.000 cm with a possible error of 0.50000 cm. Use linear approximation to estimate the maximum error in the calculated surface area.
The three methods of solving linear systems covered are substitution, elimination, and graphing. There are examples posted on the solution field and in the attachment.
A car is moving at a rate of 76 miles per hour, and the diameter of its wheels is 2.9 feet.
An oil tank ruptures at time t=0 and oil leaks from the tank at a rate of r(t)=100(e^(-.01t)) liters per minute. How much oil leaks out during the first hour?
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