2. The following data represent the height of plants using 4 different materials of pots after one month in inches: Plants A B с D E plastic 6.8 8.3 4.0 5.0 9.2 Pot material rubber 5.7 9.4 8.1 7.3 6.8 clay 7.3 9.1 6.3 7.7 7.5 organic 6.1 8.6 5.9 6.6 8.7 a. Is there sufficient evidence to support the claim that the height of the plants differ significantly on the pot materials? b. Is there sufficient evidence to support the claim that the heights of the plants differ significantly? c. Is the data Valid? Why?

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