A researcher, after performing cost analysis finds that the greater expenditure incurred by using organic farming techniques including organic pesticides is justified if it yields an average of at least 50 kg more soybean per hectare than the yield using regular farming technique using chemicals. In a pilot study, the performances of plots with soybean using organic and inorganic farming techniques are examined, with data as follows. Do these data provide sufficient evidence to indicate that fields with organic farming yield more to justify extra cost? Take α = 0.01 [Hint: Use one tailed t test assuming equal population variances] Organic farming Yield /ha Regular farming Yield /ha n1 = 10 n2 = 8 1 x = 995 2 x = 958 s1 = 38 kg s2 = 25 kg
A researcher, after performing cost analysis finds that the greater expenditure incurred by using
organic farming techniques including organic pesticides is justified if it yields an average of at least 50
kg more soybean per hectare than the yield using regular farming technique using chemicals. In a pilot
study, the performances of plots with soybean using organic and inorganic farming techniques are
examined, with data as follows. Do these data provide sufficient evidence to indicate that fields with
organic farming yield more to justify extra cost? Take α = 0.01 [Hint: Use one tailed t test assuming
equal population variances]
Organic farming
Yield /ha
Regular farming
Yield /ha
n1 = 10 n2 = 8
1
x
= 995
2
x
= 958
s1 = 38 kg s2 = 25 kg
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