“Thousands and thousands of Texas cattle, were driven north this Summer. Some have been allowed to graze
on this side of the river before crossing. Texas cattle
generate—I think that is the word—in their feet during
the long trip, a substance that poisens the grass - This
does not hurt them—but if native cattle eat that grass it
poisens them and they die of what is called Texas fever.”
—Abbie Bright
Which was a result of the situation described by Kansas
settler Abbie Bright?

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the median of the data is 4.

step-by-step explanation:

the median means the middle number of a given number.

to decide which one is the median, arrange in ascending or descending order. but sometimes, you may find two(2) number in the middle, but it's easy, just add them together and divide by 2.

so,   determine the median of the data. 2, 3, 3, 4, 5, 7, 9

it is already arranged, count 3 times forward and 3 backward and the one left is your answer.

2,3,3,4,5,7,9

our answer is 4.

hope this !

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.