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A system to aid and control the walk of a partially disabled person could use automatic control of the walking motion [25]. One model of a system that is open-loop unstable is shown in Figure DP7.6. Using the root locus select K for the maximum achievable ζ of the complex roots. Predict the step response of the system, and compare it with the actual step response.
After 1,000-trial simulation, examine statistical information generated and compare output of simulation with your findings in Problem .Briefly describe the significant similarities and differences.
Calculate the mean difference for the following data. The scores are the number of pictures the participants remembered correctly out of 20.
A random sample of 400 college students was selected and 120 of them had at least one motor vehicle accident in the previous two years. A random sample of 600 young adults not enrolled in college was selected and 150 of them had at least one motor..
Define validity and reliability. How can we insure our data is both reliable and valid? Which of these two do you think is the more important?
An oil prospector will drill a succession of holes in a given area to find a productive well. The probability that he is successful on a given trial is .2. What is the probability that the third hole drilled is the first to yield a productive well?
the u.s. census bureau collects and analyzes data on numerous aspects of american life by state including the
the real estate assessor for a county government wants to study various characteristics of single family houses in the
a new car that is a gas- and electric-powered hybrid has recently hit the market. the distance travelled on 1 gallon of
A 2005 survey of Internet users reported that 22% downloaded music onto their computers. The ?ling of lawsuits by the recording industry may be a reason why this percent has decreased from the estimate of 29% from a survey taken two years before.
A standard deviation of 20. If the seller wishes to have adequate stock 95% of the time, how many of the games must she keep on hand.
a small firm has 24 accounts payable of which 14 of the accounts have errors in them. if 7 accounts are chosen at
In many fast food restaurants, there is a strong correlation between a menu item's fat content (measured in grams) and its calorie content. We want to investigate this relationship.
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