You are working on a project to determine whether community crime prevention efforts are effective at reducing crime level. You collected data on the number of crimes for a sample of 9 gated communities that implemented the crime prevention efforts (experimental group) and 9 gated communities that did not receive the crime prevention efforts (control group). The results are presented in the table below. Your hypothesis is that the experimental group has a lower mean number of crimes than the control group (i.e., community crime prevention measures are effective). Q: Calculate the test statistic/obtained value. • Round intermediate steps to 5 decimal places if necessary. • Round your final answer to 2 decimal places. Type the value only: do not include the negative sign (-). Experimental Group Control Group 8 16 7 17 10 14 11 10 14 13 11 19 14 10 17 13 11 10 11 14 Mean: Standard Deviation: 3 3 Type your answer below. *Type the value only; do not include the negative sign (-)