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1. When is an oblique rotation superior to an orthogonal one, and why?
2. What is a communality, and what does it indicate?
3. What is the communality of variable 9 listed in Table 17-2?
4. Name a statistical method of analysis for which principal components may be a ?rst stage. Explain.
5. What are factor loadings, and what do they measure?
why would you use the tukey-kramer procedure?to test for normalityto test for homogeneity of varianceto test for
Complete the table and answer the following questions. Use the .05 significance level.
Although the packet claims a germination rate of 92%, only 171 or 200 test seeds sprout. Is this evidence that the seeds have lost viability during a year in storage?
Years to Complete a Graduate Program: The average number of years a person takes to complete a graduate degree program is 3. The standard deviation is 4 months. Assume the variable is normally distributed. If an individual enrolls in the program, ..
Explain the difference between the null and alternative hypothesis. Which one can be proven in a statistical sense?
She wants to test H0: μ = 0.5 Ha: μ ≠ 0.5 Find the associated P-value. Is the result significant at the 5% level (α = 0.05)? At the 1% level (α = 0.01)?
The fleet of yellow fire trucks made 135,035 runs and had 4 accidents. At α = .01, did the yellow fire trucks have a significantly lower accident rate?
Calculate the average time it takes a plane to land and clear the runway once it has notified the airport that it is in the vicinity and wants to land.
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?
Tay-Sachs couples. Approximately 1 in 28 people of Ashkenazi Jewish descent are Tay-Sachs carriers. In randomly sampling one man and one woman from this population, what is the probability neither is a Tay-Sachs carrier?
How would you calculate cost of goods sold? What items make up cost of goods sold?
a sample of 55 night-school students ages is obtained in order to estimate the mean age of night-school students. x 25
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