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Support requests arrive at the software company at rate of 1 every 10 minutes. suppose that requests arrive as events in a Poisson process.
Determine the expected number of requests in an hour?
Determine the probability that number of requests in hour is between 7 and 9 inclusive? Write your answer to four decimal places.
Determin the expected number of requests in a 10 hour work day?
Determine the probability that number of requests in 10 hour work day is between 68 and 80 inclusive? Give your answer to four decimal places.
Determine standard deviation of number of requests in a 10 hour work day? Write your answer to four decimal places.
Perform a posthoc test that is suitable if we assume that group 7 is a control group and that the other are different treatment groups and that we are only interested in finding significant treatments, not to compare them.
What can you say about the effect of sample size on confidence intervals?
Write out the multiple regression equation using the given data.
He measured whether their answers to a standard set of mental problems were affected. His approach to manipulating his independent variable involved
When studying the simultaneous responses to two categorical questions, we should set up a:
The thickness of metal plates made by a particular machine are normally distributed with mean of 4.3 mm and standard deviation of .0.12 mm. What is the value of c for which there is 80% probability that a metal plate has a thickness with in the in..
Test a hypothesis to see if this proportion has changed since 1985. I have the standard error and a t-score of 1.660. I need the test effect, test statistic and p-values.
Finding and retaining good health care professionals requires an agressive recruitment effort. Since the demand for health care professionals is growing and the supply of these workers is not keeping pace, an untapped source of workers retired emp..
Suppose the download times for a commercial tax preparation site are normally distributed with a mean download time of 2.0 seconds and a standard deviation of 0.5 second.
Suppose a stock analyst wants to determine whether there is a difference in the mean rate of returns for three types of stock - utility, retail, and banking.
If the amount of cosmic radiation to which a person is exposed while flying by jet across the US is a random variable having the normal distribution with µ=5.35 mrem, and σ = 0.59 mrem.
Based on these data, determine the 95 percent confidence interval estimate for true population mean?
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