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If 3 of the 98 test subjects are arbitarily selected without replacement, determine the probability that they all had false positive results. Is it unusual to arbitarily choose 3 subjects without replacement and get three results which are all false positive results? Describe.
A statisitcs professor plans classes so carefully that the lengths of her classes are uniformly distributed between 45.0 and 55.0 minutes. Find the probability that a given class period runs less than 50.5 minutes.
What assumption must you make about the population distribution in order to construct the confidence interval estimate in (a)?
Develop a scatter diagram for the data and write a brief summary.
A survey of 500 internet users found that the users were online an average of 6.5 hours a week with a standard deviation of 3.1 hours. If 49 internet users are randomly selected what is the probability that their average time online will be more t..
Which of the following statements is true regarding a nonparametric test?
The amount of income spent on housing is an important component of the cost of living. The total costs of housing for homeowners might include mortgage payments, property taxes, and utility costs (water, heat, electricity).
The sampling distribution of the average score and Suppose x' is your average pay for the 100 weeks. Then x' has approximately
In a class of 40, 16 driver a car made outside the United States. What is the confidence interval for the total population of students at the 95% level?
Employ the table of standard normal probabilities (z table) to answer the following questions.
Assume that the regression equation for the relationship between SAT scores and IQ scores is y = 9 +.105x. What would you expect the IQ score to be for the following individuals, given their SAT scores? Individual SAT Score IQ Score Susan 850 Sall..
Suppose the least squares regression equation is Y' = 1,202 + 1,133X. When X = 3, what does Y' equal?
Selection of a location for a prospective Wal-Mart creates many questions for executives. A suitable site would be one that has an adequate demand for Wal-Mart offerings, sufficient transportation resources, and an available labor force.
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