Waiting for answer This question has not been answered yet. You can hire a professional tutor to get the answer.

# A field researcher is gathering data on the trunk diameters of mature pine and spruce trees in a certain area. The following are the results of his...

**A field researcher is gathering data on the trunk diameters of mature pine and spruce trees in a certain area. The following are the results of his random sampling. Can he conclude, at the 0.10 level of significance, that the average trunk diameter of a pine tree is greater than the average diameter of a spruce tree? **

**Pine trees**

**Spruce trees**

**Sample size**

**25**

**35**

**Mean trunk diameter (cm)**

**55**

**48**

**Sample variance**

**100**

**140**

**What is the test value for this hypothesis test?**

**Test value: **