a company that manufactures antibacterial soap is testing the effectiveness of its new product. the new soap was tested in a sample of 8 operating rooms in the san antonio area during the last year. the numbers below are contamination measurements before and after the new soap dispensers were installed. here is the data and the test results: at the .01 significance level can we conclude the contamination measurements are significantly lower after use of the new soap? what is your decision and why? for the toolbar, press alt f10 (pc) or alt fn f10 (mac).