A large orchard owner in the state of Washington is interested in determining whether the mean number of bushels of peaches per acre is the same or different depending on the type of tree that is used. He also thinks that production may be affected by the type of fertilizer that is used. To test, he has set up a test in which a one-acre plot of peach trees with a combination each of 5 varieties and 3 fertilizer types are studied. The following data reflect the number of bushels of peaches on each acre plot.

Assuming that the hypothesis tests will be conducted using an alpha equal 0.05 level, what is the value of the Fisher's LSD critical value for doing the multiple comparisons?

a)Approximately 16.78
b)About 11.30
c)Approximately 186.7
d)Need to know the number of trees planted on each acre.