Mathematics, 16.04.2020 21:40 badpotterchris
Ability to grow in shade may help pines found in the dry forests of Arizona resist drought. How well do these pines grow in shade? Investigators planted pine seedlings in a greenhouse in either full light, light reduced to 25% of normal by shade cloth, or light reduced to 5% of normal. At the end of the study, they dried the young trees and weighed them. (a) What type of study is this? Observational study: prospective Observational study: retrospective Observational study: cross-sectional Experiment: matched pairs design Experiment: randomized block design Experiment: completely randomized design (b) Match each of the following terms to the appropriate description. Pine seedlings a. Explanatory variable Amount of light b. Individuals Full light, light reduced to 25% of normal, light reduced to 5% of normal c. Response variable Weight d. Treatments
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Ability to grow in shade may help pines found in the dry forests of Arizona resist drought. How well...
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