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Question: Consider an M/M/1 queuing system in which customers arrive according to a Poisson process with rate λ, and service times are exponential with mean 1/λ. We know that, in the long run, such a system will not be stable. For i ≥ 0, suppose that at a certain time there are i customers in the system. For j > i, find the expected length of time until the system has j customers.
The standard deviation of the distribution of means of change scores is 2.0 and the mean change score for the sample studied is an increase of 5.2. What is the t score?
the standard deviation is $400. Suppose 90 claims are filed in one week. What is the probability that the average (sample mean) is more than $1900?
Examined the effect of body position on blood pressure
Discuss the single most significant lesson you learned in this course that relates to leadership and management or to organizational culture and diversity.
Formulate null and alternative hypothesis to test for no difference between the population mean credit card charges for groceries and the population mean card charges for dining out.
assume that the population standard deviations are equalnbspfor income mutual funds and growth mutual funds. use the
Using a .05 level of significance, test the hypothesis that there is no difference between the starting annual salaries of public accountants and financial planners. What is your conclusion?
If the distribution of mouth volumes is nearly Normal, what percentage of men and of women should have even larger mouths than these?
What is the probability of failing math only (that is, you fail math but pass history)?
The results are n = 65 and r = 0.37. Is there statistical evidence of a linear correlation between the two variables?
a data set with 7 observations yielded the following. use the simple linear regression model.greek letter capital sigma
a doctor studies the side effects of a drug on a male and female. following data was obtained for a random sample of
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