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Graph inequality. Using the test point method.
4x + 3y > 24
Draw a tree diagram depicting the sample space outcomes for this experiment.
Suppose a small bicycle manufacturer makes cheap bikes that sell for 180$ each. The total cost of producing x bikes (in $) is given by c(x)=6000+240x-0.8x^2, where x is up to 200 bikes.
First, write down three social problems (e.g., drug abuse, gang membership, bullying, domestic violence, child abuse, etc) that we might attempt to predict using logistical regression.
If desired confidence level is 95 percent, suitable critical value is?
Find an unbiased estimator of mp(1 - p)/n. Find the optimal estimator using the Rao-Blackwell Theorem.
Why are you no longer directly comparing sample means? How does using the F test - the analysis of variance (ANOVA) reduce your Type I error rate? What is the difference between a within-groups and a between-groups variance?
Perform a significance test to see if there is a relation between mortality and duration of employment in the group hired AFTER 1945 and report a p-value.
A personnel manager has a computer-generated list of all employees that indicates that 70 percent are full-time employees, 20 percent are part-time employees, and 10 percent are furloughed or laid-off employees.
Get an answer from tutors to this homework question now: Under what circumstances is the experimentwise alpha level a concern?
What are the 3 measures of dispersion/variation in a dataset? How do you calculate each of these 3 measures?
Based on a scatter diagram, would you estimate the linear correlation coefficient to be:
What does r 2 of .73 tell us? Is this a strong or weak correlation? How can you tell?
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