Test the hypothesis of no differences for average payback period (years) necessary to justify solar heating systems for residences.
Savings and Loans Other Financiers
X1 = 8.7 X2 = 7.7
S2/1 = .5 S2/2 = .6
n1 = 100 n2 = 64.
What test of differences is appropriate in each of the following situations and why?
(a) Average campaign contributions of Democrats, Republicans, and Independents are to be compared.
ANOVA: Here a comparison of ...
The solution provides step-by-step method for the calculation of t test statistic. Formula for the calculation and Interpretations of the results are also included.