Null hypothesis seems to be supported by Group IV : 70% acetone + 30% water.
Acetone causes more damage than the isopropanol does, clearly indicated by higher absorbance and low standard error of mean.
Question 3 0/1 EFFECT OF WATER-SOLUBLE POLLUTANTS ON MEMBRANE PERMEABILITY Treatment Group Treatment Solution (% by...
EFFECT OF WATER-SOLUBLE POLLUTANTS ON MEMBRANE PERMEABILITY Treatment Group Treatment Solution (% by volume) 70% isopropanol; 30% water 90% isopropanol; 10% water 50% acetone; 50% water 70% acetone; 30% water 100% water Mean Absorbance of 460 nm Light (n = 5) 0.164 0.125 0.215 0.274 0.095 2xStandard Error of the Mean (2xSEM) 0.032 0.100 0.034 0.018 0.004 A student formulated a hypothesis that water-soluble pollutants damage living organisms by increasing the permeability of cellular membranes. To test the hypothesis, the...
In testing the hypothesis that begging behavior in gull chicks is a fixed-action pattern that is released by the sight of a bill with a red dot, researchers found that gull chicks pecked at gull models containing bills with red dots. Which of the following experiments should be performed next to confirm that the color red initiated the response? Repeat the experiment by using a gull model with (1) a red dot that was four times the size of a...