Concept explainers
Say the serum cholesterol level (X) of U.S. males ages 25-34 follows a translated gamma distribution with
(a) What are the mean and the variance of this distribution?
(b) What is the
(c) What percentage have a serum cholesterol level less than 200’? Hint: Integrate by parts.
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Probability And Statistical Inference (10th Edition)
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- After performing a statistical regression on a set of data the value of the correlation coefficient r was -0.2041. What does that imply about the data?arrow_forwarda.Calculate and interpret a 95 % CI for the population regression coefficient on x1 b. The estimated standard deviation of the predicted y when x1 = 400 and x2 = .125 is .180 . Calculate a 95 % CI for true average roughness under these circumstances.arrow_forwardIn a study of possible correlation between the height in cm (X) and the weight in kg (Y) of chimpanzees, a sample of 40 animals produces a correlation coefficient of r=0.813 and a regression line with equation Y=0.34X+19.5. What is the expected weight of a chimpanzee that is 157 cm tall? Round off final answer to 2 decimal places.arrow_forward
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill