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A shipment of 250 netbooks contains 3 defective units. Determine how many ways a vending company canbuy three of these units and receive:
a) no defective units
b) all defective units
c) at least one good unit
Also need the probability of the above.
Explain why the polls that are so frequently quoted during early returns on Election Day TV coverage are an example of cluster sampling.
a panel of economists provided forecasts of the u.s. economy for the first six months of 2007 the wall street journal
What is the minimal length of time the body should stay in the mold if the manufacturer wants to be 85% sure that the bonds have hardened?
A sample of 36 packages reveals the mean weight to be 3.01 pounds, with a standard deviation of 0.03 poounds. What is the estimated population mean?
It labels the top 5% (the heaviest 5%) overweight. How heavy does a box have to be for it to be labeled overweight? Round your answer to the nearest hundredth.
Scores by women on the SAT-I test are normally distributed with a mean score of 998 and a standard deviation of 202. scores by women on the ACT test are normally distributed with a mean of 20.9 and a standard deviation of 4.6 assume the two tests ..
An advantage of the permutation test over the t test for a difference in means, can Permutation tests be used for tests when we believe the two populations differ under the null hypothesis.
the machining center at a production facility has three lathes of differing ages and thus precision. the oldest machine
Assume H- to be true. What is the probability that this decision strategy will result in a type I error. Sketch the sampling distribution and put in the region of rejection?
descriptive statistics for given data.weekly salaries in dollars for a sample of registered nurses are
Is there sufficient evidence for concluding that true average repair time exceeds 200 min? Carry out a test of hypotheses using a significance level of .05.
There are 40 English students enrolled. The teacher questioned 5 students who always sit in the back of the classroom. Three of the 5 said "yes" when asked if they would like "A Tale of Two Cities" as the next class reading assignment.
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