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In an experiment, researchers randomly assigned one of four types of fertilizers to each of 40...

In an experiment, researchers randomly assigned one of four types of fertilizers to each of 40 plants. (All plants were of the same type.) The researchers measured the growth of each plant after 3 months. They used a Bonferroni Multiple Comparison method to determine which fertilizer(s) had a different mean growth. If they wanted to keep the probability of making a Type I Error at 0.05, the significance level on each hypothesis test is (round to FOUR decimal places)

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