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Compare two models. Model #1 has an r-squared of .25 and an adjusted r-squared of .10. Model #2 has an r-squared of .20 and an adjusted r-squared of .14. Given this information, what model should you use?
A. Use model 1 because r-squared is higher
B. Use model 2 because adjusted r-squared is higher
C. Use model 1 because the combination of r-squared and adjusted r-squared is higher
D. Use model 2 because the combination of r-squared and adjusted r-squared is lower
E. Use model 1 because the adjusted r-squared is lower
I have computed an analysis of variance for three groups with 10 observations per group. Evaluate the degrees of freedom for the F test
What is the probability of getting a perfect score if you were forced to guess at each question?
Fit a multiple linear regression model for predicting the hospital duration using age, sex, body temperature, white blood cell counts, antibiotic use, blood culture and service
In a pilot study, five kids are given several problems of each type to practice (and then tested on three problems), in one of the three Sequences: D-R-T, T-D-R, OR R-T-D.
A polling company obtains an alphabetical list of names of voters in a precinct. They select every 20th person from the list until a sample of 100 is obtained.
Florida State University administers a test of mathematics placement to students when they first enter the university.
The last lessons have spent a lot of time describing the slope and intercept terms (and their variances) of the one-variable sample regression function.
Suppose the probability of a boy being born is the same as the probability of a girl being born. Find the probability that a family with three children will have two boys and one girl.
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Regression equation to predict the dependent variable using multiple regression analysis:
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Findout the margin of error for this survey if we want a 99 percent confidence in our estimate of the percent of adults over 50 who take vitamin supplements.
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