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Suppose that X and Y are independent exponential random variables each with rate [lambda]. What is the conditional probability of X, given that Z = X + Y = z?
The average daily jail population in the United States is 706,242. If the distribution is normal and the standard deviation is 52,145, find the probability that on a randomly selected day the jail population is:
Many times researchers preselect the value of alpha of .01 or .001. What are the factors that allow selection of either of those levels of significance?
The following data show samples of three chain stores in three different locations in one town and the amount of dollars spent per customer per visit. At the 0.05 level, is there a difference in among the means?
An experiment is designed to test the potency of a drug on 20 rats. Previous animal studies have shown that 10-mg dose of the drug is lethal 5% of the time within the first 4 hours; of the animals alive at 4 hours, 10% will die in the next 4 hours..
Construct a 90 percent confidence interval for the proportion of all kernels that would not pop.
what are the expected value and variance of the following probability distribution?random variable
a computer can be classified as either cutting-edge or ancient. 93 of computers are classified as ancient. a what is
Report descriptive statistics, assumptions tests, effect sizes (partial eta) as well as tests of statistical significance.
Assuming that the population variances are equal for male and female Grade Point Averages (GPAs), use the following sample data to test whether the averages are different at the 0.05 level of significance.
professor yao wants to know whether students at eku can score higher by attending class each time. he understands that
consider the formula used for confidence interval and the elements included in the formula. what happens to the
Two marbles are selected, one at a time from a jar of marbles containing 10 black, 10 brown, 10 white and 10 green marbles. Let x represent the number of white marbles selected in 2 separate selections from the jar.
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