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Is it possible to calculate distribution-free confidence intervals based upon the Wilcoxon two-sample test? If so, what do they mean?
a random variable is normally distributed with a mean of 25 and a standard deviation of 5. if an observation is
a certain disease is found in one person in 5000. if a person does have the disease the test will show a positive
you are testing whether there is a significant difference in the proportions of college students and similar aged non college students having accidents during the two year period. What is the value of your pooled proportion?
Determine and interpret a 95% confidence interval for the mean amount of time Americans age 15 or older spend eating and drinking each day.
in each of the following situations the sampling frame does not match the population resulting in undercoverage. give
The borderline between low calcium levels and those not considered low. Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place.
a large population is known to have a mean of 11500 and a standard deviation of 2750. if all possible samples of size
Consider the experiment- "the next integer generated." Define the following: Event A = "Odd number" = (1,3,5,7) and Event B "number more than 4" = 5,6,7,8.
In a random sample of 10 cell phone users, what is the probability that exactly 2 have used their phones to access the Internet? More than 2?
A certain airplane has two independent alternators to provide electrical power.
To test the effectiveness of a new studying strategy, a teacher randomly divides a sample of 8 students into tow groups, with n = 4 in each group.
a summary data on proportional stress limits for specimens constructed using two different types of wood are shown
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