Sun or Shade? Karl Niklas and T.G.Owens examined the differences in a particularplant
Chapter 10, Problem 88(choose chapter or problem)
Sun or Shade? Karl Niklas and T.G.Owens examined the differences in a particularplant, Plantago Major L., when grown in full sunlightversus shade conditions.16 In this study, shadedplants received direct sunlight for less than 2 hourseach day, whereas full-sun plants were never shaded.A partial summary of the data based on n1 16full-sun plants and n2 15 shade plants is shownhere:Full Sun Shadex s x sLeaf Area (cm2) 128.00 43.00 78.70 41.70Overlap Area (cm2) 46.80 2.21 8.10 1.26Leaf Number 9.75 2.27 6.93 1.49Thickness (mm) .90 .03 .50 .02Length (cm) 8.70 1.64 8.91 1.23Width (cm) 5.24 .98 3.41 .61a. What assumptions are required in order to use thesmall-sample procedures given in this chapter tocompare full-sun versus shade plants? From thesummary presented, do you think that any of theseassumptions have been violated?b. Do the data present sufficient evidence to indicatea difference in mean leaf area for full-sun versusshade plants?c. Do the data present sufficient evidence to indicatea difference in mean overlap area for full-sun versusshade plants?
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