SOLUTION: Write a correct null and alternative hypothesis for testing the claim that the mean life of a battery for a cell phone is at least 80 hours.

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Question 233778: Write a correct null and alternative hypothesis for testing the claim that the mean life of a battery for a cell phone is at least 80 hours.


Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Write a correct null and alternative hypothesis for testing the claim that the mean life of a battery for a cell phone is at least 80 hours.
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Ho: u >= 80
Ha: u < 80
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Cheers,
Stan H.