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A Professor gives tests that are either hard, medium, or easy. If she gives a hard test, her next test will be either medium or easy, with equal probability. However, if she gives a medium or easy test, there is a 0.5 probability that her next test will be of the same difficulty and a 0.25 probability for each of the other two levels of difficulty. Construct an appropriate Markov chain and find the steady-state probabilities.
Briefly discuss a real-world example when the solution of a system of inequalities must be in the first quadrant?
To what probabilities do each of the following sigma levels correspond to, based on a standard normal curve: 3 sigma, 4sigma, 5 sigma, and 6 sigma? (Hint: Use the NORMSDIST function in Excel.
Chandra has 5 liters of a 24% solution of sodium hydroxide in a container. What is the amount and concentration of sodium hydroxide solution she must add to this in order to end up with 8 liters of 27% solution?
a machine produces parts with lengths that are normally distributed with ? 0.55. a sample of 10 parts has a mean
Discuss how a t Test for a dependent variable can be of great value in applying a new approach to the treatment of aggressive behavior to a small group of students.
What additional information is obtained from measurements on an ordinal scale compared to measurements on a nominal scale?
wall street securities firms paid out record year-end bonuses of 125500 per employee for 2005 fortune february 6 2006.
A random sample of 46 observations was selected from a normally distributed population. The sample mean was xbar=81, and the sample variance was s2=35.0. Does the sample show sufficient reason to conclude that the population standard deviation is not..
1) What is correlation? 2) What is an example of two variables that are likely to be correlated because they are both changing over time?
The same for each of the four quarters next year. The seasonal factor for the second quarter is 145. Determine the seasonally adjusted sales for the second quarter of next year.
A recent article in the Wall Street Journal reported that the 30-year mortgage rate is now less than 6 percent. A sample of eight small banks in the Midwest revealed the following 30- year rates (in percent):
A power of 0.2203 can be interpreted to mean there is a 22.03% chance of selecting a sample whose sample mean is larger than 166.3 lb.
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