In a survey on 50 gas stations in an area, the mean cost of regular gas was $1.95 per gallon. Was this cost less than the national average cost of $2.00 where the assumed known standard deviation is $0.20 per gallon? Use a 1% significance level. | What is the value of the TEST STATISTIC? ______________________________ Note: Enter XXX.XX AT LEAST ONE DIGIT BEFORE THE DECIMAL, TWO AFTER and round up. Thus, 134.784 is entered as 134.78, 35.295 is entered as 35.30, .2749 is entered as 0.27, -.5650 is entered as -0.57