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The probability a D-Link network server is down is 0.038. If you have four independent servers, what is the probability that at least one of them is operational?
the health department reports a 1 rate of the hiv virus for the at-risk population. under certain conditions a
(a) Find the 95% confidence interval for the average monthly comprehensive car insurance premium paid by all owners of medium-sized cars. Interpret the result. (Use the z-table.) (b) Find the 90% confidence interval for the same problem. Interpret ..
Suppose that you have a set of data that produces a correlation of r = -0.67 between graduate GPA and the number of errors made in a psychological report.
What is the critical value of z? What is the value of the test statistic, z, rounded to three decimal places?
What is tunneling? Why does the threat of tunneling impede the development of financial markets?
Brain cancer is a rare disease. In any year there are about 3.1 cases per 100000 od population. Suppose a small medical insurance company has 150000 people on its books.
A survey of 125 families asked whether the household had Internet access. Each family was classified by race. The contingency table is shown here.
The amount of money in the red purse at the end of this experiment is a random variable. What is its mean and variance?
statistical correlation and regression always inspire a certain degree of fascination because they provide a
Question about Business Statistics (MA3000)? Is it possible to have a distribution that is symmetric but not normal? if so, what is an example and what would we call such a distribution?
What is the 95% confidence interval for the mean number of microwaves sold at a retail store in the chain last week?
Items that fail during the test are not replaced. Determine the plan, using Handbook H-108, if the sample size is to be five times the rejection number.
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