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1. Use the information obtained in to find an estimator for a2, the variance of a gamma random variable. Is the estimator obtained unbiased for all?
2. An acid solution made by mixing a powder compound with water is used to etch aluminum. The pH of the solution, X, will vary due to slight variations in the amount of water used, the potency of the dry compound, and the pH of the water itself. Assume that X is gamma distributed with a and /3 unknown. From these data. estimate a, /3, it, and a2 using the method of moments:
Academic degrees and gender. Here are the projected numbers (in thousands) of earned degrees in the United States in the 2010-2011 academic year, classi?ed by level and by the sex of the degree recipient:28
A random process has sample functions of the form X(t)=A, where A is a Rayleigh distributed random variable with mean of 4. Is this process wide sense stationary? If so, why?
Construct a probability for the number of students in the sample who watch soap operas.
Consider the problem of representing line segments in a plane. Each segment is represented as a pair of points: a starting point and an ending point. Define a constructor make-segment and selectors start-segment and end-segment that define the rep..
What were the most radical aspects of Long's plan?
the manufacturer of hardness testing equipment uses steel-ball indenters to penetrate metal that is being tested.
Is there sufficient evidence at a = 0.05 to conclude that the students did better the second time? Discuss possible reasons for your results.
If a distribution appears to be bell-shaped and symmetric about its mean, can we assume that the probability of being within one standard deviation of the mean is .68?
As people use the toothpaste, the amount remaining in any tube is random. Assume the amount left in the ube follows a uniform distribution. How much toothpaste would you expect to be remaining in the tube.
Suppose 30 students studied. Find the mean and Standard Deviation for the distribution of the sample means
in a learning experiment untrained mice are placed in a maze and the time required for each mouse to exit the maze is
Translate the following statements into symbolic form using capital letters to represent affirmative English statements.- Either Stanford or Tulane has an architecture school.
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