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1) For set of data, total variation or sum of squares for y is SST = 143.0, and error sum of squares is SSE = 24.0. What proportion of variation in y is described by the regression equation?
2) In a regression analysis, the sum of the squared deviations between y and y is SST = 200.0. If the sum of the squared deviations about the regression line is SSE = 40.0, what is the coefficient of determination?
3) For leading health maintenance organization (HMO) firms, lists number of persons enrolled in HMO along with number of plans the firm administers. Given these data, find out least-squares equation for predicting total enrolment as a function of number of plans administered. What would be estimated total enrolment for HMO firm that administered 20 plans?
The weights (in pounds) of a sample of five boxes being sent by UPS are: 12, 6, 7, 3, and 10.
What is the probability of finding exactly four watch soap operas?
Find out the range (R), variance (V) and standard deviation (s) for the given set of values:
Can we conclude that there is a positive association between the size of the home and the selling price? Use the .05 significance level.
What is the probability that at least one of the new books is a commercial success?
Select the variable team salary and find the mean, median, and the standard deviation
Determine the 90% confidence interval for average days worked by employees in all payroll departments?
Develop an appropriate forecast model for the given problem whereas the student population has remained constant during this period.
Extra college-level training, and rest of the sailors arn't accounted for. How does your sample compare to what you expected to determine? Define null hypothesis.
Compute the population attributable risk for smoking and lung cancer.
Any value which is based on having measured a sample is called:
The hypothesis is to be tested at the 5% level of significance. The critical value from the table equals:
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