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The faces of a 3-regular polyhedron are all squares or hexagons. How many square faces can the polyhedron have? Does the number of square faces uniquely determine the polyhedron?
a sanitation supervisor is interested in testing to see if the mean amount of garbage per bin is different from 50. in
question 1.nbspa large scale marketing survey was conducted. some of the variables collected weregender nbsp
Calculate the standard deviation of the sample mean for samples of size 1, 4, 25, 100, 250, 500, 1000, and 5000. Graph your results with the sample size on the x axis and the standard deviation on the y axis.
First National Bank and City National Bank are competing for customers who would like to open IRAs. 32 weeks are randomly selected for First National Bank and another 32 weeks are randomly selected for City National.
With the conditions of problem 1, if 20 students are selected , what is the probability that the mean of their scores is greater than 18?
tim and elle visit a hospital where many people have the mumps. the probability that tim gets the mumps is .13 and the
A random variable has a normal distribution with ?? = 62.4. Find the standard deviation of the random variable if the probability is 0.20 that it will take on a value greater than 79.2
Among coffee drinkers, men drink a mean of 3.2 cups per day with a standard deviation of 0.8 cups. assume the number of coffee drinks per day follows a normal distribution.
question a nutritionist thinks the average person with an income below the poverty level gets less than the recommended
Many companies use sampling to determine whether a batch should be accepted. A (n, c) sampling plan consists of inspecting n randomly selected items from a batch and accepting the batch if c or fewer sampled items are defective.
ten determinations of percentage of water in amethanol solution yield x 0.552 and s 0.037. if mu is the true
Three different methods for assembling a product were proposed by an industrial engineer. To investigate the number of units assembled correctly with each method
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