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A normal distribution has a mean of m = 80 with s = 20. What score separates the lowest 30% of the distribution from the rest of the scores?
Using this test 80% of Down's syndrome cases can be identified at birth, while 5% of normals are detected as positive. a. What is the sensitivity and specificity of the test?
Give an example of a function using a set of at least 4 ordered pairs. The domain will be any four integers between 0 and +10. The range will be any four integers between -12 and 5.
A film alliance used a random sample of 50 U.S. citizens to estimate that the typical American spent 78 hours watching videos and DVDs last year. The standard deviation of this sample was 9 hours.
From the given polynomials, identify the polynomials of degree one. A function gives the value of C as 2 × (22/7) × r. Find C when r = 7 cm and r = 91 cm.
Assume that your county's population is similar to the American population in age distribution. What are the mean and standard deviation of the proportion P^ who are at least 75 years of age in samples of 150 respondents?
In this problem set you will get some practice performing hypothesis tests for two samples. If you use Statdisk to perform any portion of these analyses, please include the results, label them, and refer to them accordingly in your interpretations..
Effect of a new training program on time taken to complete a task, measured by a "before" and "after" test
How do we use a least squares regression line? What is the range for the coefficient of determination?
Please perform a hypothesis test using a .05 significance level on the following information. Next please perform a regression analysis as well as providing a scattered diagram.
Find a 99% confidence interval estimate of the proportion of people who say that they voted.
The person's body fat percentage, and ‘y' is the person's lean mass percentage. Predict the lean mass for a person who is 27 years old and has a body fat percentage of 4.5%.
Define irregular component in time series and explain the differences between other components as well as its effects.
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