Homework SourseThe following information is available for two samples selec
The following information is available for two samples selected from independent normally distributed populations:
What is the value of FSTAT if you are testing the null hypothesis ? Please round to four decimal places.
Population A : n, = 25 S1 = 161.9
PopulationB: n2 = 25 S~ = 133.7
What is the value of FSTAT???________
Solution
Fcalc - value = (161.9)^2 / (133.7)^2 = 1.4663
The tabulated value for dF = 24 in each case, and 95% confidence level is F24,24 = 1.9838.
In this case,Fcalc < F24,24, so we accept the null hypothesis that the two standard deviations are equal, and we are 95% confident that any difference in the sample standard deviations is due to random error.
