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A random sample of 100 people was taken. 85 of the people in the sample favored candidate A.
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 + 4x1 - 3x2 + 8x3 + 8x4
for this model SSR = 700 and SSE = 100
the computed F statistic for testing the significance of the above model is...