The Environmental Protection Agency (EPA) advocates a maximum arsenic level in water of 10 micrograms per liter. Below are results of EPA tests on randomly chosen wells in a suburban Michigan county. Research question: Is the mean arsenic level affected by well depth and/or age of well? Arsenic Level in Wells (micrograms per liter) Age of Well (years ) Well Depth Under 10 10 to 19 20 and Over Shallow 5.4 6.1 6.8 4.3 4.1 5.4 6.1 5.8 5.7 Medium 3.4 5.1 4.5 3.7 3.7 5.5 4.3 4.4 4.6 Deep 2.4 3.8 3.9 2.9 2.7 2.9 2.7 3.4 4.0(b) Fill in the missing data. (Round your Table of Means and F values to 2 decimal places, 55 values to 3 decimal places, and other answers to 4 decimal places.) Table of Means Factor 21 Ape of Well Under 10 In to 10 30 and Over Factor 1: Shallow Depth of well Medium Deep Total ANDTVA Table Source P-wilun Farter 1 Factor 2 Interaction Error TotalTukey simultaneous comparison t-values (d.f. = 18) Deep Medium Shallow Deep Medium Shallow Critical values for experimentwise error rate: 0.05 0.01