What does the second consumer agency

Reference no: EM131852691

Another consumer agency tests (in exactly the same manner) tires from the same batch of tires tested by the agency in Problem 20. It randomly selects 25 tires and obtains X 82,200 and sX 900.

(a) Calculate t.

(b) What does the second consumer agency conclude ( .05)?

Reference no: EM131852691

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