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Suppose we can only sample from Uniform distribution (0,1) with k=3. Design an algorithm to simulate chi-square distribution with 2k freedom via general transformation method.
a civil service exam yields scores which are normally distributed with a mean of 81 and a standard deviation of 5.5.
What is the sampling distribution of the sample proportion? Assume the population proportion is 98% defective free.
(a) What is the probability that Sam gets a scholarship but Allen doesn't? (b) What is the probability neither receives a scholarship?
Create an interactive spreadsheet that allows the viewer to change some of the critical numbers to realize the possible risks involved with different variables.
A random sample of purchases was obtained, and the number falling into each category was recorded. The data are given in the following table.
A researcher would like to evaluate the relationship between a person's age and their preference between two leading cola brands.
Followup calls to a few randomly selected customers show that a 95% confidence interval for the proportion of all orders that arrive on time is 88% ± 6% What does this mean?- Are these conclusions correct? Explain.
Test the claim that private hospitals pay more than government owned hospitals. Assume both populations normal and the variances are equal.
the turkeys found in a county in southern ohio have an average weight of 15.6 pounds with a standard deviation of 4.0
explain how various factors determine the width of confidence intervals. indicate how changes in these factors affect
If the cholesterol levels of adults are normally distributed with mean 230 and standard deviation 25, what is the probability that a randomly sampled adult has a cholesterol level greater than 260?
It is known that the standard deviation of the population of checkout times is one minute. With a .95 probability, the sample mean will provide a margin of error of?
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