Iowa corn typically yields 160 bushels per acre. A new experimental variety, grown on 36 1-acre test plots,
yielded 163.5 bushels on average, with a standard deviation of 13.5 bushels. At a 5% significance level, can we conclude that the new variety has a higher yield? Question 11 options: No, it clearly has the same yield. Yes, it clearly has a higher yield. We can clain it has a higher yield, but only at the 1% significance level. Although it may have a higher yield, we really can't claim it does.
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