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Homework: Parametric resonance
Consider the following equation describing parametric resonance: here is small damping ( ). Transform this equation to dimensionless form and using averaging procedure derive equation for “slow” function . Note that function is determined as follows
Find resonance condition, when is growing.
Calculate an exponentially smoothed forecast, using an alpha value of .30.
How many riders must you survey (take for test rides) to be 90% confident that the sample proportion is off by no more than five percentage points
Test the claim of the brewery about the mean volume equal to 32 oz. at the 0.05 significance level. It's your choice whether to use z or t.
A boat's crew rowed 12 miles downstream, with the current, in 1.5 hours. The return trip upstream, against the current, covered the same distance, but took 4 hours. Find the crew's rowing rate in still water and the rate of the current.
Estimate the approximate population of Appleville in 1988 by finding an equation and then substituting.
Teresa and Jamie are among 10 students who have applied for a trip to Washington. Two students from the group will be selected at random . What is the probablitiy that Teresa and Jaime will be the 2 students.
For a class of 43 students, for a certain exam, the mean grade is 67 and the standard deviation is 7, how many students should receive a C?
A. Formulate the null and the alternative hypotheses. B. Which statistic should be used to test the hypotheses?
Find an image of a Pie Chart or Pie Graph and post this image to the discussion board. Discuss what this graph is telling us about the data
jared and cody went on a backpacking trip for 3 days. they brought 2 boxes of spaghetti. each box weighed 16 oz. they
The distance, D, in miles, that you can drive on $1 worth of gas as a function of the cost, g, in dollars, of a gallon of gas can be modeled by the power function: D(g) = 22.02g^-1.02
Suppose you work at Costco or another major, national, big-box store, and you do a market-basket analysis and identify the 25 pairs of items in the store that have the highest lift and the 25 pairs of items that have the lowest lift.
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