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The mean and max (90th percentile) elasped time to repair an item is 2.3 hours and 5.4 hour, respectively.
The time to repair probability distribution is not specified.
What is the mean, median, and max (90th, 95th, and 99th percentiles) elapsed time to repair using the lognornal model?
Determine the first two cumulants also the ratio between the standard deviation and average energy. Explain why distribution becomes extremely narrow.
it is reported that 25 percent of american households use a cell phone exclusively for their telephone services. in a
For each of the following three populations, indicate what the sampling distribution for samples of 25 would consist of: Travel expense vouchers for a university in an academic year.
Use a graphical technique to compare the ages, household incomes, and education of the five groups of car buyers. (Do not use Box plots or Stem-and-Leaf Display).
A restaurant claims that its speed of service time is less than 18 minutes. A random selection of 36 service times was collected, and their mean was calculated to be 17.7 minutes.
Find a 95% confidence interval for the true proportion of voters who approve of the way the government is being run.
Compute the mean number and median number of apples in a bag.
The hypothesis test produces a z-score of z = 2.37. Assuming that the researcher is using a two-tailed test, what decision should be made?
Suppose the joint probability density function of X and Y is uniform in the plane square with corners (0,0), (0,3), (3,0) and (3,3). Find the probability of X > 1 or Y > 1. Find the probability of X + Y
Ten percent of the items produced by a machine are defective. Out of 15 items chosen at random. What is the probability that exactly 3 items will be defective?
the dice game craps is played as follows. the player throws two dice and if the sum is seven or eleven then she wins.
What is the difference between qualitative and quantitative data? Provide an example of each type. What is a null and alternative hypothesis?
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