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Average weight of checked baggage in domestic US flights is 25 kg with variance of 900 kg. A plane carries 100 passengers. It can handle 3000 kg of checked baggage, that is, a maximum of 30 kg per passenger. What is the probability that a random load of 100 passengers will check too much baggage for the plane to handle?
If Xbar is the sample mean diameter for a random sample of n = 16 rings, where is the sampling distribution of Xbar centered, and what is the standard deviation of the Xbar distribution?
let x denote the amount in pounds of polyurethane cushioning found in a car. the density for x is given by fx1in21x
1. for the production lot size model to be appropriate the relationship between d annual demand and p maximum annual
The number of bombardment necessary to achieve the disintegration of a certain nucleus is assumed to have the distribution above. In one sequence in which b bombardments are available, of these have already failed to disintegrate the nucleus. What..
1.a rbd on the number of insects was performed yielding the following table. test the constrast if insecticide 1 and 2
Finds that 3 contain errors. If the accountant's theory is correct, what is the probability that at least 3 invoices contain errors in a random sample of 10?
The standard deviation is 2.5 pounds. Find the probability that the mean of a sample of 55 families will be more than 13 pounds.
A medium-size college town were surveyed, and it was found that 110 were regular voters. Estimate the true proportion of regular voters with 90% confidence.
a study was conducted of 90 adult male patients following a new treatment for congestive heart failure. one of the
the lifetime of a certain type of calculator battery are normally distributed. the mean life is 400 hours and the
Test the hypothesis that the baby's birthweight is independent of the mother's age.
a random sample of medical files is used to estimate the proportion p of all people who have blood type b.a if you have
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