In the past, the mean running time for a certain type of flashlight battery has been 8.8 hours. The manufacturer has introduced a change in the production method and wants to perform a hypothesis test to determine whether the mean running time has changed as a result.
In the past, the mean running time for a certain type of flashlight battery has been 8.8 hours. The manufacturer
has introduced a change in the production method and wants to perform a hypothesis test to determine whether the mean running time has changed as a result.
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