Commercial eggs produced from different housing systems. Refer to the Food Chemistry (Vol. 106, 2008) study of four different types of egg housing systems, Exercise 12.36 (p. 659). Recall that you discovered that the mean whipping capacity (percent overflow) differed for cage, barn, free range, and organic egg housing systems. A multiple comparisons of means was conducted using Tukey’s method with an experimentwise
error rate of .05. The results are displayed in the SPSS printout above.
(a) Locate the confidence interval for (μCAGE
− μBARN) on the printout and interpret the result.
(b) Locate the confidence interval for (μCAGE
− μFREE) on the printout and interpret the result.
(c) Locate the confidence interval for (μCAGE −μORGANIC) on the printout and interpret the result.
(d) Locate the confidence interval for (μBARN
− μFREE) on the printout and interpret the result.
(e) Locate the confidence interval for (μBARN
− μORGANIC) on the printout and interpret the result.
(f) Locate the confidence interval for (μFREE
− μORGANIC) on the printout and interpret the result.
(g) Based on the results, parts a–f, provide a ranking of the housing system means. Include the experimentwise error rate as a statement of reliability.