The Wisconsin Fast Plant has a very rapid growth cycle In a

The Wisconsin Fast Plant has a very rapid growth cycle. In a study, seven plants were treated with the substance Ancymidol (ancy) and were compared to eight control plants that were given ordinary water. Heights of all of the plants were measured in cm after 14 days of growth (data are given in the table below). The researcher wanted to determine whether the ancy enhanced the growth of the Wisconsin fast plants. Formulate a hypotheses and use an appropriate t test to test the hypothesis. You can assume the variances of two groups are equal.

Control Ancy

10.0 13.2

13.2 19.5

19.8 11.0

21.2 5.8

13.9 12.8

20.3 7.1

9.6 7.7

Solution