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The Acculturation Rating Scale for Mexican Americans (ARSMA) is a test that measures the extent to which Mexican Americans have adopted Anglo/English culture. A similar test, the Bicultural Inventory (BI), attempts to do the same thing. To compare the tests, researchers administer both tests to 22 Mexican-Americans. Both tests have the same range of scores (1.00 to 5.00) and are scaled to have similar means for the groups used to develop them. There was a high correlation between the two scores, giving evidence that both are measuring the same characteristics. The researchers wanted to know whether the population mean scores for the two tests were the same. The differences in scores (ARSMA - BI) for the 22 subjects had x = 0.2519 and s = 0.2767.
(a) Describe briefly how the administration of the two tests to the subjects should be conducted, including randomization.(b) Carry out a significance test for the hypothesis that the two tests have the same population mean. Give the P-value and state your conclusions.(c) Give a 95% confidence interval for the difference between the two population mean scores.
If you are using the method of least squares for fitting trends in an annual time series containing 25 consecutive yearly values,
Identify the regression equation and make the prediction. Show your procedure, or explain how you reached your answer. Costs of Television: Find the best predicted quality score of a Hitachi television with a price of $1900. Is the predicted qualit..
List all samples of size 2, and compute the mean of each sample. Compute the mean of the distribution of sample means and the population mean. Compare the two values. Compare the dispersion in the population with that of the sample means.
the population of completion times is 10.4 minutes, what is the minimum sample size needed for the managers to be 95% confident that their estimate is within 2.2 minutes of u?
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Inmates who are in the state facility and 9 who have legal satisfaction scores of 5 or more. How do determine the probability for this because I have come up weird numbers.
A grocery store manager discovers that on any given weekend 70% of the customers sales amount to more than $100. What is the probability that the first 2 sales will be over $100?
In a perfectly symmmetrical distribution: a) the range equals the interquartile range b) the interquartile range equals the mean c) the median equals the mean d) the variance equals the standard deviation
Data is distribution of the most popular colors for 2005 model luxury cars made in North America. Design the pie chart and bar graph for data.
At one excavation site 8641 pot shards have been found that not yet been cleaned and identified. What is the probability that:
Listed below are the commissions earned ($000) last year by the sales representatives at the Furniture Patch, Inc.
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