How do nematodes (microscopic worms) affectplant growth? A botanist prepares 16

Chapter 0, Problem 25.31

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How do nematodes (microscopic worms) affectplant growth? A botanist prepares 16 identical planting pots and then introduces different numbers of nematodes into the pots. He transplants a tomato seedlinginto each pot. Here are data on the increase in height of the seedlings (incentimeters) 16 days after planting:15 (a) Make a table of the means and standard deviations in the groups. Makeside-by-side stemplots to compare the treatments. What do the data appear toshow about the effect of nematodes on growth? Is use of ANOVAjustified?(b) State H0 and Ha for the ANOVA test for these data, and explain in wordswhat ANOVA tests in this setting.(c) Report your overall conclusions about the effect of nematodes on plantgrowth.

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