5. Which experimental treatment (Easy or Difficult) has choice-selections that are most risky for the survival of Physarum and why? How do we expect results to differ between the easy and difficult treatments? BIOL300 Laboratory Name: Quantitative Analysis Instructions: Perform the following statistical tests and transcribe the results in the tables below. All tests should be two-tailed using a = 0.05. Tests can be completed at: http://www.socscistatistics.com/tests/Default.aspx Easy Choice Difficult Choice Lab 3.1 Page 1 of 3 z-tests 1a. Perform a z-test (for two population proportions) to test whether there is a significant difference between the proportion of starved and well-fed Physarum that made accurate choices (picked 10%) in the Easy Choice Experiment. 1b. Repeat the same test using the data for the Difficult Choice Experiment. t-tests 2a. Perform a t-test (independent means) to test whether there is a significant difference between the mean time-to-decision of starved and well-fed Physarum in the Easy Choice Experiment. 2b. Repeat the same test using the data Difficult Choice Experiment. Results Table 1. Results for a z-test on the difference in accuracy between the proportion of starved and well-fed Physarum in the Easy and Difficult Choice Experiments. Easy Choice Difficult Choice Z-score Lab Section: t-score p-value Table 2. Results for a t-test on the difference in time-to-decision between the starved and well-fed Physarum in the Easy and Difficult Choice Experiments. p-value Significant difference? Significant difference?

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