Question: Apply the dependent samples t test to the data in Exercise 12 49

Apply the dependent-samples t-test to the data in Exercise 12.49. Is the conclusion consistent with the one reached in that exercise? Explain.
In exercise
A randomized block design has three different income groups as blocks, and members of each block have been randomly assigned to the treatment groups shown here. For these data, use the 0.01 level in determining whether the treatment effects could both be zero. Using the 0.01 level, evaluate the effectiveness of the blocking variable. (Use data file XR12049.)

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