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Question: Treating low bone density (4.2) Fractures of the spine are common and serious among women with advanced osteoporosis (low mineral density in the bones). Can taking strontium ranelate help? A large medical trial assigned 1649 women to take either strontium ranelate or a placebo each day. All of the subjects had osteoporosis and had had at least one fracture. All were taking calcium supplements and receiving standard medical care. The response variables were measurements of bone density and counts of new fractures over three years. The subjects were treated at 10 medical centers in 10 different countries. Outline an appropriate design for this experiment. Explain why this is the proper design.
Suppose the police stop a driver because the gun detects speeding. What is the probability that the driver was actually driving below the speed limit? (Round your answer to 4 decimal places.)
To allow the creation of camera-ready documents, languages like TEX and LATEX have been created. These languages can be thought of as varieties of programming language whose output controls laser printers or phototypesetters.
The manager is concerned that sales are slipping, after taking into account the average value of sales for four consecutive Saturdays being $4800.
To compare two programs for training industrial workers to perform a skilled job, 20 workers are included in an experiment. Of these, 10 are selected at random.
Do students at various colleges differ in how sociable they are? Twenty-five students were randomly selected from each of three colleges in a particular region and were asked to report on the amount of time they spent socializing each day with other ..
a potential investor conducted a 144 day survey in each theater in order to determine the difference between the
a computer memory manufacturer specifies that its memory chip stores data incorrectly an average of 6.3 out of 10
In both cases, give a number of data points, n, and a correlation coefficient, r. Draw a number of data points, n, and a correlation coefficient, r. Tell whether the correlation is significant at 0.05 or 0.01 level, explain.
explain when you would use the hypergeometric probability distribution rather than the binomial probability
Assuming that X is a binomial random variable with n = 10 and p = .20, find the probability for each of the following values of X:- X = 5.
At the .05 level of significance, can we conclude the Middletown students stayed in their districts less time than the Brockton students? Use the five-step hypothesis testing procedure.
Assume a group of students provides happiness ratings for how happy they feel during the school year and how happy they feel during the summer.
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