Per course policy on academic honesty reproduction or dissemination of this Use Table 2 to answer questions 5 through 8 You are

Question

Per course policy on academic honesty reproduction or dissemination of this Use Table 2 to answer questions 5 through 8 You are a researcher evaluating the relationship of fingernail length to the microbial population underneath the nail after handwashing You have 12 volunteers 6 of which have short natural nails and 6 with longer artificial nails Both nail type groups are exposed to E coli JM109 and FCV The participants wash their hands using the same handwashing procedures and researchers determine the microbial population after handwashing The cumulative data is in the table below TABLE 2 Average counts of E coli JM109 log CFU per volunteer SD and FCV log TCID so per volunteer SD beneath fingernails before and after hand washing for all six hand washing procedures combined E coli JM109 Nail type Natural Artificial Before hand washing 6 17 0 59 A 6 57 0 47 B Before hand washing 3 06 0 47 A 3 69 0 52 B FCV After hand washing 4 11 0 47 A 4 81 0 85 B Average counts followed by different letters in the same column were significantly different P 0 05 Significant differences in E coli JM109 and FCV counts between the two nail types were determined by t test After hand washing 1 15 0 75 A 2 18 0 98 B Lin C M Wu F M Kim H K Doyle M P Michaels B S amp Williams L K 2003 A comparison of hand washing techniques to remove Escherichia coli and caliciviruses under natural or artificial fingernails Journal of Food Protection 66 5 Write a hypothesis that would have been supported because of this study 1 pt 8 Based on the table what can you conclude 1 pt 6 What are the independent and dependent variables What is the control group Why are control groups important 4 pts 7 What is one constant variable mentioned in the paragraph describing the study 1 pt

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