Reference no: EM132845306

1. 12 points. A silviculture specialist is planning a study to measure the effect of prescribed fire on wounding of red oak, which could reduce log value. He intends to subject one stand to prescribed fire, with a second stand serving as an unburned control. The size of oak trees can influence bark thickness and hence fire resistance, so the specialist first wants to make sure that he selects stands containing canopy red oak of the same size.

a. For the first stage of his study, what is the:

i. Null hypothesis (H0), in words.

ii. Alternative hypothesis (HA), in words.

b. As his estimate of tree size, the specialist measures diameter at breast height (dbh, in inches). He records the following dbh for canopy red oak in two stands:

Stand 1: 22, 25, 23, 25, 24, 26, 24, 23. Stand 2: 24, 22, 27, 28, 23, 24, 25, 25

Use these data to test H0 from a.i. What do you conclude about the test and its ramifications for the specialist's study?