Best measure of central tendency
The mean is always the best measure of central tendency to use.
True/False
If you use a simple random sample, then your results are guaranteed to be a good measure of the population.
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Based on the Nielsen ratings, the local CBS affiliate claims its 11:00 PM newscast reaches 41% audience. In a survvey of 100 viewers, 36% indicated that they watch the news on his local CBS station.
One section, having a mass of 4.60×105, is blown straight backward with a speed of 2.20×106. A second piece, with mass 7.80×105, continues forward at 1.30×106. What is the speed of the third piece?
Write a function that calculates the average and range of every five observations in the dataset? If the number of values in the last group of numbers is less than 5 it needs to gives a note about it.
A proposed project requires an initial cash outlay of $849,000 for equipment and an additional cash outlay of $48,500 in year 1 to cover operating costs. During years 2 through 4, the project will generate cash inflows of $354,000 a year.
The mean is always the best measure of central tendency to use. If you use a simple random sample, then your results are guaranteed to be a good measure of the population.
(a) How much work is done to bring this wheel from rest to a speed of 118 rpm in a time interval of 26.0 s? (b) What is the applied torque on the flywheel (assumed constant)?
A new customer orders a single item (which obviously can be shipped in a single box). What is the shipping department cost that will be allocated to this order?
As a 15000 kg jet plane lands on an aircraft carrier, its tail hook snags a cable to slow it down. The cable is attached to a spring with spring constant 60000 N/m. If the spring stretches 30 m to stop the plane, what was the plane's landing speed
A random vector (X; Y ) has the joint density function f(x; y) = 6xy2 0 x 1; 0 y 1; 0 otherwise. Find fX(x) and fY (y). Are X and Y independent?
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