Captivity can influence immunological responses in some mammals. Seeber et al. (2020) investigated various aspects of immunological responses in captive and free-ranging zebras. One aspect of the study involved samples of 12 free-ranging zebras from Namibia, 9 from Tanzania, and 38 captive zebras from various zoos in Europe. (All of these were non-lactating females.) One of the measured variables from blood samples was lysozyme concentration (μg/L). (Lysozyme is a biomarker of the immune response.) The researchers were interested in investigating possible differences in lysozyme concentration between zebras in the various locations. As part of the analysis, they carried out a one-way ANOVA on the lysozyme concentrations for the zebras from the 3 locations, and found the following output. Df Sum Sq Mean Sq F value Pr(>F) Location 2 50.65 25.33 42.24 6.54e-12 Residuals 56 33.57 0.60 Suppose the assumptions of one-way ANOVA are reasonable here. (For the purposes of this question, ignore any possible issues such as outliers or skewness.) Give a conclusion to the ANOVA F test that relates to the situation at hand. Also, suggest a path forward for the researchers. (What sort of analysis can they do to further explore this data?)
Captivity can influence immunological responses in some mammals. Seeber et al. (2020) investigated various aspects of immunological responses in captive and free-
The researchers were interested in investigating possible differences in lysozyme concentration between zebras in the various locations. As part of the analysis, they carried out a one-way ANOVA on the lysozyme concentrations for the zebras from the 3 locations, and found the following output.
Df Sum Sq Mean Sq F value Pr(>F)
Location 2 50.65 25.33 42.24 6.54e-12
Residuals 56 33.57 0.60
Suppose the assumptions of one-way ANOVA are reasonable here. (For the purposes of this question, ignore any possible issues such as outliers or skewness.)
Give a conclusion to the ANOVA F test that relates to the situation at hand.
Also, suggest a path forward for the researchers. (What sort of analysis can they do to further explore this data?)
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