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Question: Refer to Exercise. Pick three of the possible problems with meta-analysis listed in Section 25.4 and discuss how they might apply to the reviews in the Cochrane Database.
Exercise: According to a report in New Scientist (Vine, 21 January 1995), the UK Cochrane Centre in Oxford is launching the Cochrane Database of Systematic Reviews, which will "focus on a number of diseases, drawing conclusions about which treatments work and which do not from all the available randomized controlled trials" (p. 14). The reviews will be made available electronically to practicing physicians and will contain meta-analyses of various areas of medical research.
a. Why do you think they only planned to include "randomized controlled trials" (that is, randomized experiments) and not observational studies?
b. Do you think they should include studies that did not find statistically significant results when they do their meta-analyses? Why or why not?
MATH1550H: Assignment: Question: A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..
MATH1550H: Assignment: Question: what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?
MATH1550H: Assignment: Question: Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form
MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?
MATH1550H: Assignment: Questions: Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.
Caselet on McDonald’s vs. Burger King - Waiting time
Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.
Problems on Sampling Variability and Standard Error and Confidence Intervals
Estimate the population mean
Conduct a marketing experiment in which students are to taste one of two different brands of soft drink
Find out the probability
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