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Mathematics, 04.02.2020 07:47 freyaocain

Crop researchers plant 15 plots with a new variety of corn. the yields in bushels per acre are: 138.0 139.1 113.0 132.5 140.7 109.7 118.9 134.8 109.6 127.3 115.6 130.4 130.2 111.7 105.5 assume that math notation bushels per acre.
a) find the 90% confidence interval for the mean yield for this variety of corn.
b) find the 95% confidence interval.
c) find the 99% confidence interval.
d) how do the margins of error in (a), (b), and (c) change as the confidence level increases?

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