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Credit Card Usage For a certain year a study reports that the percentage of college students using credit cards was 83%. A college dean of student services feels that this is too high for university, so she randomly selects 50 students and finds that 40 of them use credit cards. At α =0.04, is she correct about her university?

Are conditions satisfied? (describe.)

What is value of the test statistic? (Show your work.)

What is the p-value?
Interpret the p-value in context of the problem:

Statistical decision:

Did you find the evidence problem was looking for?

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