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A computer package selects at random, and without replacement, three multiple choice questions for you from a bank of 10 questions. Later you decide to have another attempt, so it again chooses three questions at random and without replacement. What is the probability that none of the questions in the second set are the same as any of those in the first set? What must the computer do for there to be no questions in common?
If you draw one ball from the urn what is the probability that it is blue or white?
A small pilot study is being conducted to determine the association between maternal age and birth weight. First, from all the single births in 2009 at Hospital X with mothers aged ? 20 years, we randomly selected 15 records.
You attempt a 50 item (n = 50) true-and-false exam. You did not study for the material and your attempt to answer any item is a guess, with a 50% chance that you will get any item correct. You need a score of 30 or better to pass the exam.
They have collected data on gender, shoe size, and height to see if they can change their business model to include only one size of shoes regardless height or gender of the wearer.
A person must score in the upper 2% of the population on an IQ test to qualify for member ship in Mensa, the international high-IQ society. If IQ scores are normally distributes with a mean of 100 and a standard deviation of 15, what score must a ..
Provide free: fax assistance for the residents of this city, use the binomial approximation to the hyper geometric to find the probability that at least 3 women arc selected.
How should he go about taking samples to gather data for testing the hypotheses?
Statisticians prefer large samples. Describe briefly the effect of increasing the size of a sample on each of the following: The margin of error of a 95% confidence interval?
What is the hospital's cost of capital assuming that the hospital has the following capital structure on its Statement of Financial Position.
Conduct a one-tailed hypothesis test given the information below. A certain brand of Green Energy light bulbs was advertised as having an average illumination life-span of 2,500 hours.
In a test of the independence of two variables, one the variables has two possible categories and the other has three possible categories.
In this table, my research is about the average amount of money people expect to spend on attomeys when they are injured. Is there a difference, depending on type of injury? Do people expect to spend more when the injury happened in a car, on job,..
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