A farmer has decided to use a new additive to grow his crops. He divided his...
A farmer has decided to use a new additive to grow his crops. He divided his farm into 10 plots and kept records of the corn yield (in bushels) before and after using the additive. The results are shown below. You wish to test the following hypothesis at the 5 percent level of significance. H0: μd = 0 against H1: μd ≠ 0. What is the value of the appropriate test statistic?
a. 2.536
b. 2.033
c. 5.014
d. 1.584
Homework Answers
Ans: Here we can use the paired t- test as
But the information regarding 
and sample standard deviation of deviations i.e S is missing, if
we have thesevalues we can use the following formula as
t=dbar/(S/sqrt(n)) which follows t- distribution with n-1 d.f.
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