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Margin of error and the confidence interval. A study based on a sample of size 144 reported a sample proportion of 0.87 and a margin of error of 0.055 for 95% confidence.
(a) Give the 95% confidence interval.
(b) If you wanted 99% confidence for the same study, would your margin of error be greater than, equal to, or less than 0.055? Explain your answer.
A three-dimensional vector random variable, X, has a covariance matrix.- Find a transformation matrix.
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If a gambler rolls two dice and gets a sum of four, he wins $10; and if he gets a sum of three, he wins $25. The cost to play the game is $5. What is the expectation of this game?
what are the advantages and disadvantages of graphical as opposed to numerical approaches to descriptive
What is the probability that the victim's BAC was at least 0.01%?- Given that the victim had been drinking prior to the accident, what is the probability that this victim's BAC was at least 0.08%?
An exterminator claims that no more than 10% of the homes he treats have termite problems within 1 year after treatment. In a sample of 100 homes, local officials find that 14 had termites less than 1 year after being treated. At the 0.05 level of..
A school district tests the vision of 169 incoming kindergarten children. How many would you expect to be nearsighted? With what standard deviation?
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In the following enthymemes, determine whether the missing statement is a premise or a conclusion.- Mechanistic materialists do not believe in free will, because they think that everything is governed by deterministic laws.
The following data represent the number of defective chips produced on the last 15 days: 121, 133, 98, 85, 101, 78, 66, 82, 90, 78, 85, 81, 100, 75, 89. Would you conclude that the process has been in control throughout these 15 days? What control..
How many degrees of freedom are associated with the deviations from the sample means in the combined data set? Explain.
gulf real estate properties just signed contracts for two new listings a gulf view condominium with a list price of
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