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Potential customers arrive at a single-server station in accordance with a Poisson process with rate λ. However, if the arrival ?nds n customers already in the station, then he will enter the system with probability αn. Assuming an exponential service rate μ, set this up as a birth and death process and determine the birth and death rates.
It is suspected that the mean turnover has changed and is not 6.0. Use the .05 significance level. State the decision rule.
Find the sample mean and find the sample standard deviation - construct a confidence interval for the true population mean for body temperatures of healthy adults.
Determine the probability that sample mean is between 7.5 and 8 minutes?
Truck tire life is normally distributed with a mean of 60,000 miles and a standard deviation of 4,000 miles. You bought four tires. What is the probability that the average mileage of the four tires exceeds 66,000 miles?
If the researcher wants to test if the blood pressure measurements after the procedure are different from the blood pressure measurements before the procedure, what will the null and alternative hypotheses be? Treat the differences as (blood press..
Examine the plot of the regression residuals against t. Is there a tendency for the residuals to have long positive and negative runs? To what do you attribute this phenomenon?
Determine the probability that tire wears out before 70,000 miles?
To find out the efficiency of the current ticket operation, Mike wishes to examine several queue operating features.
Identify the independent and dependent variables, and Construct a nominal, ordinal, and interval level measure for each independent and dependent variable.
Variance of 4.2 and mean of 23.2 were calculated. Find out 95% confidence interval on mean and standard deviation. Describe any potential problems with this analysis.
The average price of a personal computer is 949 assuming that the prices are normally distributed with a standard deviation of 100 what is the price that corresponds to the least expensive 10%.
Find out the conditional probability for the given data. Illustrate what is the conditional chance that the selected person is male?
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