A researcher did a study looking at the effectiveness ofdifferent approaches to washing leafy green produce, with the goalof reducing risk for Escherichia coli (e coli) exposure inconsumers. Farms were randomly assigned to either an enhancedwashing regimen for three months, or to an industry-standardwashing approach for the same amount of time. Periodically a memberof a research team would visit each farm and obtain a sample ofleafy greens for testing. The primary measure collected was thetotal number (count) of e-coli tainted samples collected from eachfarm over the three month period. There were 16 farms assignedrandomly to each group. The distributions of e coli counts arebelow.
Typical washing: 6, 5, 9, 1, 0, 6, 2, 19, 3, 2, 1, 0, 1, 3, 6,5
Enhanced washing: 2, 0, 3, 0, 0, 6, 3, 2, 0, 3, 0, 2, 2, 3, 1,0
Compute the 95% Confidence Intervals for the each group, andthen the CI 95% for the difference between the 2 groups. Using yourCI 95% findings for the enhanced washing group, what is the marginof error? What is the standard error? Provide a brief narrativedescription for each CI you calculate.
