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Question: Teen smokers, regionally. The Monitoring the Future study of teen smoking described in Exercise 9 looked at brand preferences by region of the country, as seen in the table below. Write a few sentences describing the similarities and differences in brand preferences among eighth graders in the two regions listed.
Explain why trying to compute a simple average of all error deviations and of all treatment deviations will not lead to any results.
Choose a new car or light truck at random and note its color. Here are the probabilities of the most popular colors for vehicles. Choose two vehicles at random. What is the probability that both are silver or both are white?
Create a new dataset that can be used with the between subject design. You will no longer need the variables CreativePre and CreativePost Test. Instead, you will have only one variable for the score on the creativity test.
A test is given to graduates of tw buisness schools A and B. The scores are given out of 100. Test whether the school differ in quality by using Mann- Whitney U- test with a 10% level of significance.
in a large lecture class the professor announced that the scores on a recent exam were normally distributed with a
Find the 99% confidence interval for the population proportion.
Write a series of three statements that assign the value 40 to the variable HoursWorked, the value 17.50 to the variable HourlyWage, and a statement that multiplies them together and stores the result in the variable GrossPay.
You have been called upon to assess whether a NICU nutrition protocol is working to promote growth in underweight babies. You have weight measurements at three time points: birth, 28 days and discharge from the hospital. You also have a variable i..
The other measurement is below 10, i.e. where high measurements tend to cancel low measurements. Use these possibilities to compute the distribution of when n = 2(i.e., find , , etc.).
What is the factor in this experiment?- What experimental units would you propose ?- Explain what would serve as a placebo for this study.
What are some conditions under which business decisions are made using probability concepts? Provide at least two examples of subjective probability.
Is there a relationship between sales and newspaper?
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