In an investigation to compare two different production processes, A and B, the yields are measured in 4 replicate measurements of each process:
A | 71.8 | 69.3 | 75.6 | 72.8 |
B | 72.3 | 86.3 | 65.9 | 81.9 |
We wish to use a
t-test to test for a significant difference between the yields of the two processes, but we first use a
F-test to check whether there is a significant difference in the variance of the two samples.
Using Excel or Minitab, the calculated
p-value is: