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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.
Research shows that the life time of Everlast automobile tires is normally distributed with a mean value of 70,000 miles. What is the probability of having a tire that lasts more than 80,000 miles.
the irs reported that 62 of individual tax returns were filed electronically in 2008. a random sample of 225 tax
Santa Fe black on white is a style of pottery that occurs in about 61% of the pot shards found in the Bandelier National Monument area.
For each case below, choose the most appropriate statistical procedure: A teacher of a low-level reading group is interested in what the average score is for the group of 25 students.
A group of 12 patients are given the medicine. If the claim is true, what is the probability that 8 have relief within a few minutes?
Identify at least TWO EXAMPLES of time series data. You may find it necessary to consider how your organization(s) have utilized time series data to "forecast".
1- ounce chocolate chip cookies resulted in following calorie amounts. At α=0.01 level, is there sufficient evidence that average calorie content is greater than 110 calories.
Consider the event "Ray is in the garage" and the event "Felix is not in the garage." Are these events mutually exclusive? What is the mean number of cats in my garage at 4:00 pm?
The population of IQ scores forms a normal distribution with a mean of u=100 and a standard deviation with a mean of sigma=15.
What is the maximum likelihood estimate of μ? What is an approximate standard error of the maximum likelihood estimate?
Calculate the z score for a raw score of 10 from the folowing scores:10,20,25,5,30. Based on your anser , approximately what percentile does the raw score of 10 represent?
illustrate briefly how an experimental study is conducted. What is the difference between the two types of variables used.
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