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  3. 2. a. use signifcance test to test the indicated c

2. a. Use signifcance test to test the indicated claim. A standard aptitude test is given...

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Basic Math

2. a. Use signifcance test to test the indicated claim. Astandard aptitude test is given to several randomly selectedprogrammers, and the scores are given below for the mathematics andverbal portions of the test. At the 0.05 level of significance,test the claim that programmers do better on the mathematicsportion of the test.

              Mathematics 447540 427 456 527 449 477 498425         

             Verbal                   385 478 343 371 440 371 394 422 385

b. Find a 90% confidence interval for the difference of themean.

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