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The manager of a large department with three floors reports that the time a customer on the second floor must wait for an elevator has a uniform distribution ranging from 0 to 4 minutes a)find the mean and standard deviation of x, the time a customer on the second floor waits for an elevator.
Mothers did not take the drug DES during pregnancy , what is the estimate of the number of women out of 1000 who would be expected to have tissue abnormalities?
About 72% of dog owners buy holiday presents for their dogs. Suppose n = 4 dog owners are randomly selected. Find the expected number of persons, in the sample, who buy their dog holiday presents.
If you assume returns follow a normal distribution, which investment would give a better chance of getting at least a $40 million return? Explain. (B) How could your answer to part (A) change if you knew returns followed a skewed distribution inst..
Define the Linear programming problem (LPP)
A study of elephants is conducted to determine the average weight of a certain subspecies of elephants. The standard deviation for the population is 500 pounds.
The theoretical probability of undesirable side effects resulting from taking Grebex is 2 in 19. If 570 people take Grebex to lower their blood pressure, how many will encounter undesirable side effects?
Find the test statistic value for testing the equality of proportion variances.
As a result of an increase in demand for a town's parking facilities, the owners of a car park are reviewing their business operations. A decision has to be made to choose one of the following options:
When using the normal distribution (empirical rule) to obtain the bounds for a 99.73 percent of the values in a population, the interval generall will be _________________ the interval obtained for the same percentage if Chebyshev's theorem is ass..
Calculate the control limits for a c chart when Ubar = 3.0%, n = 60, and you collect one sample per hour for 40 hours of production. (2 sets of control limits required, x bar and range)
Different approaches for creating systems simulation models include?
find probabilty that the average of those counts is more than 83.0 mosquitoes per square meter. Assume the variable is normally distributed.
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