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The number of Employees of a major high tech company for 1999-2004 is given below:
Year Employees (in 000)
1 45, 6002 42,2003 41,1004 39, 3005 34,3006 30,300
Determine the least square trend equation.
Estimate the number of employees in 2008.
By how much the number of employees decreases (or increases) per year on the average?
A research analyst regresses the number of calls for service (Y) on the Fahrenheit temperature at 4:00 in the afternoon (X). The regression equation finds: Y = 62 + 2.4 X with an r 2 of .67
The dimension is supposed to be 224 mm and the variability of the manufacturing process is unknown. Is there evidence that the mean dimension is not 224 mm?
At the 10% level of significance, is there sufficient evidence to indicate that more books are being loaned out per day, on the average?
Solution throughout graphical method. Produced by a company linear programming model is used to describe the production schedule.
In your own words, define epistemology and ontology. Why are these concepts important to the study of research? How might the concepts influence your future research?
Determine what analysis would you do on each problem (i.e., one-sample z-test, one-sample t-test, proportion test, two-sample independent t-test, or paired test)?
A distributor of pre-washed shredded lettuce is opening a new plant and considering whether to use mechanized process or manual process to prepare the product.
When carrying out a large sample test of H 0 : m =10 vs. H a : m ¹ 10 by using a p-value, we reject H 0 at level of significance α when the p-value is:
What is the probability that a respondent said neither the Big Ten nor the Pac-10 would have a team in the Rose Bowl?
Test hypothesis that Site B is more successful in initiating acquaintances than Site A. Use alpha = .05.
Set up probability distribution by illustrating all x values and their associated probabilities. List sample space of tossing a fair coin.
Recognize and describe potential threats (up to 3) to internal validity.
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