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The IRS claims that the 70% of completed tax returns from small business are fraudulent. Suppose a random sample of 20 tax returns from small business is examined. What is the binomial probability that at least one tax return involves fraud?
If Z = 1.96, s = 3, and E = 1, determine the correct sample size.
Calculate P value? Calculate critical value?
Use technology to find the estimated minium required sample size. The minimum sample size required is ? Computer users round to the nearest whole number. What is a major obstacle to getting a good estimate of the population mean?
What is the probability of getting a perfect score if you were forced to guess at each question?
Community policing strategies have been useful in some jurisdictions to reduce crime. As Police Captain, you wish to run an experiment to see whether it will work in your city.
Select another sample of 30 scores from the same population, what measure of central tendency is likely to vary least between your first and second sample?
Find the probability that not enough seats will be available. Is this probability low enough so that overbooking is not a real concern?
A student is selected at random to represent the school at a conference. The probability that the selected student is a liberal arts major is what?
Give a brief definition and an example of the following: a. Descriptive Statistics b. Inferential Statistics
A college would like to have an entering class of 1200 students. Because not all students who are offered admission accept, the college admits more than 1200 students.
A vending machine is configured to accept only those quarters with weights between 5.550 g and 5.790 g. If 280 different quarters are inserted into the vending machine, what is the expected number of rejected quarters?
The standard screening test for Down's syndrome is based on a combination of maternal age and the level of serum alpha fetoprotein. Using the test 80% of Down's syndrome cases can be identified while 5% of normals are detected as positives.
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