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A computing center keeps information on a tape in positions of unit length. During each time unit there is one request to occupy a unit of tape. When this arrives the first free unit is used. Also, during each second, each of the units that are occupied is vacated with probability p. Simulate this process, starting with an empty tape. Estimate the expected number of sites occupied for a given value of p. If p is small, can you choose the tape long enough so that there is a small probability that a new job will have to be turned away (i.e., that all the sites are occupied)? Form a Markov chain with states the number of sites occupied. Modify the program FixedVector to compute the fixed vector. Use this to check your conjecture by simulation.
a bookshelf contains 20 textbooks for different subjects. among those 10 of them are used ones and 10 of them are brand
One of the major measures of the quality of service provided by any organization is the speed with which responds to customer complaints. A large family-held department store selling furniture and flooring, including carpet, had undergone a major ..
The reac- tion times (in seconds) before and after consuming four drinks are in data file XR11050. At the 0.005 level, has the program host made his point? Identify and interpret the p-value for the test.
If you perform step 3 correctly you will get a negative value. These are absolute valued tests so Ignore the - sign. These problems depend on the same normal curve
A player throws a fair coin and wins $1 each time it's heads, but loses $1 each time it's tails. The player will stop when his or her net winnings reach $1, or after n throws, whichever comes sooner. What is the player's probability of winning, an..
the financial department at a large hospital would like to estimate the average outstanding balance owed by patients
The following frequency table determine the ages of 100 shoppers at the local grocery store. Compute the sample mean for this data (mean for the grouped data).
Give a brief definition and an example of the following: What does the correlation coefficient r describe? What about r squared?
in some states the law requires drivers to turn on their headlights when driving in the rain. a highway patrol officer
If you want to be 95% confidence of estmating the population mean to within a sampling error of +-4 and the standard deviation is assumed to be 10, what sample size is required?
what is the percent of explained variation determined by the regression line? how do you determine the
to give a 99.9 confidence interval for a population mean ? you would use the critical valuea.z 2.576.b.z 1.960.c.z
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