a
Test whether there is any difference between the means of zinc measurement for the text line and mean for the intersection.
b
Test whether there is any difference between the means of zinc measurement for the witness line and the intersection.
c
Make an inference about the mean zinc measurements at the three notebook locations.
d
Test whether there is any difference between the variances of zinc measurement for the text line and the intersection.
e
Test whether there is any difference between the variances of zinc measurement for the witness line and the intersection.
f
Make an inference about the variation in zinc measurements at the three notebook locations.
g
State the assumptions required for the inferences to be valid. Check whether they are valid or not.
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