A Test Is Conducted to Compare Three Different Income Tax

Multiple Choice

A test is conducted to compare three different income tax software packages to determine whether there is any difference in the average time it takes to prepare income tax returns using the three different software packages. Ten different persons' income tax returns are done by each of the three software packages and the time is recorded for each. The computer results are shown below. Assuming that the hypothesis tests are conducted using a significance level equal to 0.05, the Fisher's LSD value for multiple comparisons is:

A) approximately 0.4985.
B) about 0.91.
C) approximately 1.91.
D) about 0.5387.