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The average life of light bulbs produced by SABA Electric Co. is expected to be normally...

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Statistics

The average life of light bulbs produced by SABA Electric Co. isexpected to be normally distributed with the mean service life of950 hours and standard deviation of 100 hours. A random sample of100 bulbs is tested and it has a mean life of 910 hours. Canresearcher conclude that the mean service life of the bulbs is lessthan the expectation? H0 is null hypothesis, and Ha is alternativehypothesis.

Which one of the following is a correct conclusion based on thegiven data?

Group of answer choices

Reject H0. The mean service life of the bulbs is less than theexpectation.

Do not reject H0. The mean service life of the bulbs is lessthan the expectation.

Reject H0. The mean service life of the bulbs is not less thanthe expectation

Do not reject H0. The mean service life of the bulbs is not lessthan the expectation

None of the above.

Answer & Explanation Solved by verified expert
4.4 Ratings (835 Votes)
Given 950 hours n 100 910 hours 100 hours    See Answer
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