The manufacturer of Longlife Lithium Batteries claims that the average life of their new battery, XLS, is
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Question:
The manufacturer of Longlife Lithium Batteries claims that the average life of their new battery, XLS, is at least 5 hours (or 300 minutes) A random sample of 81 batteries tested showed that the sample mean is 292 minutes with a standard deviation of 25 minutes. Conduct a test at 1% level of significance to check the validity of this claim. Compute and interpret the p -value for this test.
Related Book For
Elementary Statistics
ISBN: 978-0538733502
11th edition
Authors: Robert R. Johnson, Patricia J. Kuby
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