The following table presents three statements relating to this means plot and the ANOVA test conducted. For each statement, select whether it is true or false.
| | True | False |
| a) | It appears that Bacteria A has a significant effect on the presence of the IFA. | | |
| b) | It appears that Bacteria B has a significant effect on the presence of the IFA. | | |
| c) | It appears that there is interaction between Bacteria A and Bacteria B in relation to the presence of the IFA. | | |
A biologist is currently studying two different types of bacteria. She believes that introducing the types of bacteria to an organic system, like the human body, may cause that system to react in a particular way that will help fight off general infections A test is conducted where 180 Petri dishes are collected and are treated to the bacteria according to the following table: Bacteria A Total No dose Small dose Large dose No dose 20 20 20 60 20 20 20 60 20 20 20 60 60 60 60 180 Bacteria B Small dose Large dose Total In each Petri dish, the biologist extracts and measures the amount of a particular kind of infection-fighting agent (IFA) that is present. The amount of IFA present is an indication of how well the system can fight off infections A two-way ANOVA test is conducted on this data, and the following means plot is constructed for the results: Bacteria B No dose small dose Large dose No dose Small dose Large dose Bacteria A
It appears that Bacteria A has a significant effect on the presence of the IFA.- FALSE. It appears that Bacteria B has a significant effect on the presence of the IFA.- FALSE. It appears that there is interaction between Bacteria A and Bacteria B in relation to the presence of the IFA- TRUE
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