Multiple Choice
In the past, the mean running time for a certain type of flashlight battery has been 8.5 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.This test is:
A) Upper-tailed
B) Lower-tailed
C) Two-sided
Correct Answer:
Verified
Correct Answer:
Verified
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