H0: s2 = 20, the test statistic is…
3. Last school year, the student body of a local university consisted of 30% freshmen; 24% sophomores, 26% juniors, and 20% seniors. A sample of 300 students taken from this student body showed the following number of students in each classification.
We are interested in whether or not there has been a significant change in the classifications between the last school year and this school year.
at alpha = .05, the null hypothesis ….
4. In an analysis of variance problem, if SST = 120 and SSTR = 80, then SSE is…
5. In a regression model involving 30 observations, the following estimated regression equation was obtained:
- y Hat = 17 + 4×1 – 3×2 + 8×3 + 8×4
for this model SSR = 700 and SSE = 100
the computed F statistic for testing the significance of the above model is…