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Assume the article reported that 6% of married couples in United States are mixed racially or ethnically. Let the population consisting of all married couples in United States. When n = 250, determine the probability that proportion of couples in sample who are racially or ethnically mixed will be greater than 0.07?
Graphical method to solveout the linear programming problem. Describe where the following TEO constraints intersect.
Calculate the 95% confidence interval for the rate of positive tuberculin reaction separately for each of the two subpopulation, those with high exposure and those with low exposure.
Real estate agents always say "location, location, location" is the most important thing in buying a house. We want to know if the sales prices of homes in two neighborhoods are similar. A random sample is taken from each neighborhood. The prices ..
Expected value, variance and standard deviation.A volunteer ambulance service handles 0 to 5 service calls on any given day. The probability distribution for the number of service calls is as follows.
Two different simple random samples are drawn from two different populations. The first sample consists of 20 people, with 10 having a common attribute.
A manuscript is sent to a typing firm consisting of typists A, B, and C. If it is typed by A, then the number of errors made is a Poisson random variable with mean 2.6; if typed by B, then the number of errors is a Poisson random variable
We have already been introduced to sensitivity analysis via the geometry of a simple example. We saw that the values of the decision variables and those of the slack and surplus variables remain unchanged even though some coefficients in the objec..
The lifetime of a super tough AAA battery is normally distributed wit mean of 28.5 hours and standard deviation of 5.3 hours. For a battery selected at random
Professor Jennings claims that only 35% of the students at Flora College work while attending school. The dean thinks that the prof. has underestimated the number of students with part-time or full-time jobs.
If customers arrive according to a non-stationary Poisson process with rate function λ(t) = sin(t) + 5, is the time between the arrivals an exponential distribution?
Among 620 adults selected randomly from among the residents of one town, 18.9% said that they favor stronger gun-control laws.
Let S be a random variable (not necessarily positive). Prove using Markov's inequality that for every p>0 and for every constant q,
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