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Twenty years ago, a very famous psychologist specializing in marriagecounseling authored a book detailing the way in which she believed spouses should communicate. She is now interested in theproportion of all couples who bought her book who stayed together. For a random sample of 225 couples who bought her book, she found that 191 of them stayed together.Based on this, compute a 90% confidence interval for the proportionof all couples who bought her book who stayed together. Carrying intermediate computations at least 3 decimal places what is the the lower and upper limits of the 90% confidence interval?
following a significant one-way between-subjects anova in which k gt 2 what is the next appropriate step?a summarize
A political strategists believes that less than 55% of voters in a certain state support a particular issue. He then commission s a poll of 500 voters and 54% of them support this issue. If a = .05, is the political strategist's belief warranted
Determine the probability that a randomly selected exam will have a score of at least 71? What percentage of exams will have scores between 89 and 92?
A decision maker is working on a problem that requires her to study the uncertainty surrounding the payoff of an investment. There are three possible levels of payoff -$1,000, $5,000, and $10,000.
in boston record game fishes it is stated that in the cozumel region approximately 40 of strikes while trolling result
The following lab is to give you a chance to generate your own graphs and statistics using software.
while writing an article on the high cost of college education a reporter took a random sample of the cost of new
A demand function is known to be linear [P = f(Q)], and to pass through the following points: Q = 10, P = 50 and Q = 20, P = 30
Is the treatment effect the same in different regions of the cornea? It may be inefficient to consider each region separately. A simple way to summarize the treatment effect over all five regions is to use an average.
A vertical takeoff (VTOL) aircraft is an inherently unstable vehicle and requires an automatic stabilization system. An attitude stabilization system for the K-16B U.S. Army VTOL aircraft has been designed and is shown in block diagram form in Fig..
Suppose that 70% of the participants who are referred to an orthopedist who specializes in PS will actually have the condition. If a test score of ≥ 1.86 ms is obtained for a participant, then what is the probability that the person has PS?
sketch the area corresponding to the most extreme 1 of the standard normal distribution using the normal curve. find
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