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A company has a piece of equipment that is broken. The company loses $500 a day for each day the equipment remains broken. There is a repair shop where this equipment can be fixed. The shop charges $800 to fix the equipment. It receives requests for service from an average of 3 customers per day and the average repair time at this shop is .25 days. Assume that shop can be modeled as an M/M/1 queuing process
a) Find the expected amount of time it will take to get the equipment repaired
b) Use your answer in A to determine the company's expected overall expense, including the repair bill and the downtime cost.
The average cost for service provided per person per day is random variable with normal distribution of N$ 100 and a standard deviation of N$ 22. What is the probability that the cost will be at least N$ 127 per day per person.
in a past election the voter turnout was 51. in a survey 843 subjects were asked if they voted in the election. find
Make a plot of the residuals and comment on whether they appear to follow a normal distribution. Plot the residuals versus the fitted values. Do they seem to have the same amount of variation?
Is there clear evidence of any difference in electrical response to light flash between uninfected and infected rat eyes (at any stage of the disease)?
Find the value of x that corresponds to each of these standard scores z = -1.85.
the following data are from an independent-measures experiment comparing two treatment conditions. do these data
sketch a histogram showing the population distribution - locate value of the population mean in your sketch and make an estimate of the standard deviation.
What is the probability density function for this uniform distribution?
At the .05 level of significance, is there evidence of a difference in the mean ontime percentages for the 25 airports between September 2009 and September 2010?
in a nationwide survey suppose 100 boys and 50 girls are sampled. what is the probability that the male sample will
The publisher reports that 80% of college professors require or recommend that their students purchase some type of textbook package.
Determine the range and standard deviation of the times.
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