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Question: A group of 60 second graders is to be randomly assigned to two classes of 30 each. (The random assignment is ordered by the school district to ensure against any bias.) Five of the second graders, Marcelle, Sarah, Michelle, Katy, and Camerin, are close friends. What is the probability that they will all be in the same class? What is the probability that exactly four of them will be? What is the probability that Marcelle will be in one class and her friends in the other?
Using the network sample of Example 1, estimate the total amount spent on medical care for the disease investigated. The dollar amounts for the seven people linked to the three households listed in the example are y1 = 0, y2 = 3400, y3 = 5000, y4 =..
Each of the 6815 subjects above is considered as belonging to one of the three groups defined by the number of cups of coffee consumed per day (the three columns). Calculate for each of the three groups the proportion of subjects admitted because ..
Choose the proper conclusion regarding the claim that the population have different variances.
it has been stated that 62 of americans drink beer wine or hard liquor at least occasionally. a study was later
during a national debate on changes to health care a cable news service performs an opinion poll of 470 small-business
What is the expected number of people you must meet until you encounter the first person of Hawaiian ancestry in the village of Nanakuli?
Doctors nationally believe that 68% of a certain type of operation are successful. In a particular hospital 47 of these operations were observed and 37 of them were successful. At a = 0.05 is this hospital's success rate different from the nationa..
Conduct the appropriate test to determine whether there is any evidence that at least two population mean pressures are different. Use a = 0.05.
Further suppose that the test is 98% accurate. What's the probability that a woman whose test indicates that she is pregnant actually is?
Twenty fake tan products are selected and the amount of dihydroxyacetone (the active ingredient) in each is measured. Describe the population, the sample, and variable in this problem.
Among those who smoked, what percentage has ever been divorced? Is this value a row percentage or a column percentage?
is a binomial distribution a good model for determining the probabilities of various numbers of fatal accidents during
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