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. (Points: 4)

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Question 232004: 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.

(Points: 4)

Answer by stanbon(57282) 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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Rule: Equality Always appears in Ho.
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Ho: u >= 80
Ha: u < 80
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Cheers,
Stan H.