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QUESTION
The average life of light bulbs produced by SABA Electric Co. is expected to be normally distributed with the mean service life of 950 hours and...
- A. Reject H0. The mean service life of the bulbs is less than the expectation.
- B. Do not reject H0. The mean service life of the bulbs is less than the expectation.
- C. Reject H0. The mean service life of the bulbs is not less than the expectation
- D. Do not reject H0. The mean service life of the bulbs is not less than the expectation
- E. none of the above.
