A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 762 hours. A random sample of 29 light bulbs has a mean life of 751 hours. Assume the population is normally distributed and the population standard deviation is 60 hours. At =0.05, do you have enough evidence to reject themanufacturer's claim? Complete parts(a) through(e).

(a) Identify the null hypothesis and alternative hypothesis.

A.

H0: 751

Ha: >751 (claim)

B.

H0: 762(claim)

Ha: =762

C.

H0: >762

Ha: 762 (claim)

D.

H0: <751 (claim)

Ha: 751

E.

H0: =751

Ha: 751 (claim)

F.

H0: 762 (claim)

Ha: <762

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