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Hypothesis Testing Problem Worksheet
Research in the University Library to find five empirical (those containing data) research articles. Select articles that are of interest to you andinclude the citations at the end of this document. Place the information for each one in the following tables:
Title of Article:
Question
Answer
What is the null hypothesis (implied or explicitly stated)?
What is the research hypothesis (implied or explicitly stated)?
Using the content in any of these articles, create another research hypothesis.
thickness measurements of a coating process are made to the nearest hundredth of a millimeter. the thickness
Two variables in her spreadsheet, and finds r = 0.06. She decides to conclude there is no relationship between the variables. Was she correct?
What is the range of correlation coefficient? Give a real world example of positive and negative correlation. Do you want stocks which are highly correlated with each other or less correlated? Why?
College softball programs have a limited number of scholarships to offer promising high school seniors, so the programs invest a great deal of effort in evaluating these players.
The CEO of ABC manufacturing commissioned a study to look at the differences between the current salaries of her employees (n = 474) and their starting salaries.
Say, for example, the correlation is 0.75 between Height (measured in inches) and Weight (measured in pounds). If Height were changed to being measured in centimeters (where 1 inch = 2.54 centimeters) what effect would this have on the correlation..
Fitting a straight line to a set of data yields the following: Fitting a straight line to a set of data yields the following prediction line: Interpret the meaning of the Y intercept
Please give an example on higher wages vs. education level using a sample population of 30 men and women. Compute the measures of central tendency, dispersion, and skew for your data
What is the value of the mean square for error (the "within groups" mean square that would be reported in the ANOVA test, and what is the value of the mean square for treatments (the "between groups" mean sqaure) that would be reported in the ANOVA ..
you decide to test the effectiveness using the drug and a placebo. you select a select a group of 500 subjects and
question 1suppose that we have ratings of a restaurant from a sample of 72 customers. each of the ratings is either
Pearson correlation of r = +0.85 indicates that a graph of the data would show ___. Clustered close to a line that slopes up to the right points clustered close to a line that slopes down.
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