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For the law schools discussed in Exercise 2.67, and using the data in file XR02067,
a. Construct a scatter diagram where the dependent variable is the percentage of graduates who were employed immediately upon graduation, and the independent variable is the reputation score provided by the lawyers/judges. Do schools given higher scores by the lawyers/judges also seem to have a higher percentage of their graduates employed immediately upon graduation?
b. Fit a linear equation to the scatter diagram. Is the slope positive or is it negative? Is the sign of the slope consis- tent with your intuitive observation in part (a)?
a company that manufacturers coffee for use in commercial machines monitors the caffeine content in its coffee. the
two different sprays for rewaterproofing parkas are compared by treating 5 parkas with spray 1 and 6 with spray 2.
List 1 profession example for each probability type: empirical probability and theoretical (classical) probability. Explain clearly how these probabilities are used.
Identify a business research topic and define the research questions for the identified problem or opportunity
sixty percent of all road accidents are due to distracted driving. in a random sample of 100 accidents what is the
test null hypothesis: Meu=80 against alternative hpothesis=negative = 80 (alpha =.05). What does this tell you about meu?
In a large section of a statistics class, the points for the final exam are normally distributed with a mean of 72 and a standard deviation of 9. Find the lowest score on the final exam that would qualify a student for an A, a B and a C.
The heights of 40 randomly selected people and the heights of their mothers are recorded. Statdisk is used to run a linear correlation and regression analysis. The partial results are provided below:
A researcher has reason to believe that, for an experiment with 50 points, a 95% prediction interval would be of width 4. If the researcher wishes to run a more precise experiment that will result in a 95% prediction interval of width 2, then the ..
What is the required sample size if you need to estimate the number of workers in the United States who are highly satisfied with their job and you want the estimate to be within 2 percentage points of a 96% confidence interval.
If the average daily intake among 25-34-year-old males in the general population is 15 g, then, using a significance level of .05, test the hypothesis that the intake of linoleic acid in this group is lower than that of the general population. Als..
Suppose the Doctor would be content with 95% confidence. How does the decrease in confidence affect the sample size required?
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