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A farmer has found over the years that the average height of a corn plant is...

A farmer has found over the years that the average height of a corn plant is 77.4 inches with a standard deviation of 7.3 inches. A seed company promises that their seeds produce taller plants. The farmer plants 45 of their seeds and the resulting plants had a mean height of 80.3 inches. Test the seed company’s claim using a = .025 and the prob-value approach.

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