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Part 1: Identify at least three methods of statistical inference listed in the flowcharts on pages 842-846 of Rosner's Fundamentals of Biostatistics 7th edition. Describe in detail each method and how you could use this method in your discipline. You may not use the same tests indicated in your research proposal. Also, please review your classmates' posts before submitting and identify tests that were not (or least) used in the forum.
Part 2: Select one of the topics below from chapter 13. Identify a peer-reviewed journal article that used this topic. Provide a summary of the topic and how it was used in the article.
a. Attributable riskb. Counfounding and standardizationc. Mantel-Haenszel testd. Power and sample size estimation for stratified categorical datae. Multiple logistic regressionf. Meta-analysisg. Equivalence studiesh. Longitudinal data analysis
According to the U.S National Center for Health Statistics, the mean height for adult American males is mu = 65.5 inches. Assume the heights are normally distributed with standard deviation of sigma = 3.2.
Assume x is normally distributed with mean u=15 and standard deviation 0=3. Use the approximate areas beneath the normal curve, as discussed in this section, to answer the following questions.
Psychologists wanted to test whether a certain accelerated class' IQ was different than average. There were 25 students in the class; their mean IQ score was 108.
An instructor has a test bank consisting of 300 easy true-false questions, 200 difficult true-false questions, 500 easy multiple choice questions and 400 difficult multiple choice questions.
The population of lengths of aluminium-coated steel sheets is normally distributed with a mean of 30.05 inches and a standard deviation of 0.2 inches.
A study reported in "Inside Higher Education News" (May, 2006) found that financial incentives can improve low-income college students' grades and retention.
Select a legitimate sampling strategy and collect at least 30 data points using your created question or topic. Discuss the sampling strategy in sufficient detail so that someone else could repeat your data collection without any difficulties or q..
Which approach is most preferred and why? Optimistic, conservative, or minimax regret. Also, is establishing the most appropriate approach before analysising the problem important for the decision maker?
Suppose that 30% of the population has black hair. In a randomly-selected group of six people, how probable is it that
A chance sample of 50 families revealed an average or median of $112,000 and a standard deviation of $40,000. What is the standard error of the average or median?
Experience ranges from 0 to 3. University ranking ranges from 1 to 4 (with 1 being the highest rank), and the Wonderlic test ranges from 0 to 50.
You are the incoming inspector for potato chips - you are to ensure that each bag has 16 ounces or more in it. You want your testing to be at the level of significance of 0.05.
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