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Question: For each of the following, identify the independent variable(s), dependent variable(s), and the level of measurement (nominal, ordinal, scale).
a. The number of loads of laundry washed per month was tracked for women and men living in college dorms.
b. A researcher interested in people's need to maintain social image collected data on the number of miles on someone's car and his/her rank for "need for approval" out of the 183 people studied.
c. A professor of social science was interested in whether involvement in campus life is significantly impacted by whether a student lives on or off campus. Thirty-seven students living on campus and 37 students living off campus were asked whether they were an active member of a club.
About 95% are between 500 +- 200; i.e. between 300 and 700 Where is the data located? Where is the "middle" of the data? How variable are the data? How spread out about the "middle" are the data?
What is the correlation between student cumulative GPA and the numbers of hours spent on school work each week? Be sure to include the computations.
WARTA, the Warren Area Regional Transit Authority
The population standard deviation is 100 hours. A random sample of 64 bulbs indicates the mean is 350 hours. At the .05 is there evidence that the mean life is different than 375 hours?
What is the degree of correlation between the dependent variable and the independent variable? Is the statistical significance of the model as a whole less than the desired statistical significance for the regression model? Explain the basis for yo..
Consider a worker-paced line with three process steps, each of which is staffed with one worker. The sequence of the three steps does not matter for the completion of the product.
Assume that you choose a 50 families sample. Which is the form expected from the distribution of the average or median of the sample?
the owner of a donut shop wishes to determine the best mix for her three products zingers crullers and eacuteclairs.
On average, 8% of the subscribers respond to the survey. Of the 8% who respond, an average of 53% say they will renew. What is the Population and the Sample to this problem.
What does the intercept mean in this context? What is the estimated percent decline in visual field per year?
Use Chebyshev's theorem to determine what percent of values will fall between 58 and 82 for data set with mean of 70 and standard deviation of 4.
A recent research report shows that the percentage of college students who have been reported for plagiarizing has reached 30% each in the colleges of Education, Arts and Sciences, and Business, but only 10% in the School of Law.
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