Posted by Anonymous on Wednesday, August 24, 2011 at 5:39pm.
an automobile manufacturer claims that their tires last more than 70,000 miles before replacement? Whats the null and alternative hypothesis

Statistics  PsyDAG, Thursday, August 25, 2011 at 10:33am
Ho: x ≥ 70,000
Ha: x < 70,000

Statistics (oops)  PsyDAG, Thursday, August 25, 2011 at 10:35am
Ho: x > 70,000
Ha: x ≤ 70,000
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