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A homeless shelter program wants to know if receipt of job training program (yes, no) is related to program satisfaction (measured on a multi-item, Likert scale ). What type of statistical test should be used?
A log-normal distribution results (which gets its name from the fact that if the logarithm is taken, the distribution becomes normal). But why is that plausible?
What are its classes? What are their periods? Are they transient or recurrent? Compute the transition probabilities Pi,j .
If the lifetime of A is exponentially distributed with a mean 200 hours and the lifetime of B is exponentially distributed with a mean of 400 hours
Consider the case where we have n observations, sampled from a binomial pdf (our parameter estimator can therefore be given by X/n). Assume that the margin of error is 6%.
Assuming a proper random sample was used, verify that the sample proportion for the poll taken in 1976 almost certainly represents the population proportion.
in a survey of 3003 adults 1450 say they have started paying bills online in the last year. construct a 99 confidence
a companys manufacturing process uses 500 gallons of water at a time. a scrubbing machine then removes most of a
a manufacturing process molds 5 units at a time. suppose x be the number of defective units and has the following
What is the forecast for the rental and leasing revenue for the year 2011? b) How confident are you in this forecast? Explain your answer by citing the relevant
If a student is chosen at random, find the probability of getting someone who is a man or non-drinker.
Pomegranates are sold in crates of 10. It is estimated that about 25% of the pomegranates in a crate are bad.
Explain the difference between a normal distribution and a binomial distribution. How do we know which one to use?
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