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See the test in the file attached. taking it into consideration please answer the following.i need full explanation.

What does the d mean in the null Hypothsis?
Why is the hypothesis dependent sample rather than independent?
If you had to brief problem and solution, how would you write it in everyday terms?


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(1) The D in the hypothesis means the difference in the average life spans of animals in the wild and in the zoo.

(2) The samples are dependent because we are comparing the average life spans of the same animal under two different

living conditions, namely in the wild and in the ...

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