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Determine whether each of the following is an experiment or an observational study. Also identify the explanatory and response variables.
A big school district is embroiled in controversy. For years, a picture of Jesus Christ hung in the school's hallway.
It is common for a teacher to write home or else communicate with their students' parents. Often, there are diversity issues which might interfere with successful communication to parents.
What is the IQ score that has 20% of the other IQ scores greater than it? Draw and label the Normal curve and use the standard Normal table.
In the essay A Room of One's Own, Virginia Woolf explains the ways in which society's assumptions regarding and expectations for women are frequently at odds with those of women themselves.
Discuss how repeated simulation trials could be used to estimate the overall probability of Atlanta winning the series as well as the most likely number of games in the series.
The experiment revolves around the effect of music and chocolate on words remembered. The first IV is the effect of music with 3 conditions.
This reflection needs the student to capture and communicate a message via the form of a short story. For instance, what is human nature?
According the International Atomic Energy Agency, electricity per-capita consumption in Canada is 16,939 kwh in 2002. A random sample of 53 households is monitored for one year to determine electric
Do you expect a fact based movie that does not have any stars to get better ratings than a fiction movie with one star? Run a multiple regression where the dependent variable is ratings and the inde
Identify the important structural cost drivers for the company and the related strategic issues that it should address to be competitive.
The "Economic Report to the President of the United States" included data on the amounts of manufacturers' new and unfilled orders in millions of dollars.
Using the results, construct a profile plot. Carefully explain what features of the plot illustrate the main effects of each factor and their interaction.
The student (who still hasn't taken Stat403/ 650/ 890) then analyzes all of the data from all 12 cages together. The response from the certain faculty member is again "Read Hurlbert (1984)". Explain
A random sample of 36 one-pound specimens is taken and the moisture content of each is measured. What is the distribution of the sample mean moisture content?
Use the five steps of hypothesis testing to determine whether the observed differences in the number of activities in the following table performed by the three groups are statistically significant
Briefly explain the method you would use to determine if there is an interaction between type of music and month of the year.
The desired percentage of SiO2 in a certain type of aluminous cement is 5.5. To test whether the true mean percentage is 5.5 for a particular production facility, 16 independently obtained samples w
Identify and create appropriate displays for categorical and quantitative data in one variable, including bar graphs, line plots, frequency tables, and histograms
What is the impact of the new point on the standard deviation? Do not just give a numerical value for the change. Explain what happened to the standard deviation in words.
Health studies indicate that 5 percent of the population of Umen has a disease that is peculiar to that country. There is a diagnostic technique to detect the disease, but it is not very accurate.
The Hartley-Davis motorcycle dealer in the Minneapolis- St. Paul area wants to be able to forecast accurately the demand for the Roadhog Super motorcycle during the next month.
Is the correlation between variables 9 and 4 significant? Is this correlation relevant to practice? Provide a rationale for your answer
The director of career advising at Orange Community College wants to use decision analysis to provide information to help students decide which 2-year degree program they should pursue.
Write up the results in APA style and interpret them. Be sure that you discuss both main effects and the presence/absence of an interaction between the two.