A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 754 hours. A random sample of 30 light bulbs has a mean life of 732 hours. Assume the population is normally distribu population standard deviation is 62 hours. At a=0.05, do you have enough evidence to reject the manufacturer's claim? Complete parts (a) through (e). (a) Identify the null hypothesis and alternative hypothesis O A. Ho us732 O B. Ha: u2754 (claim) OC. Hg u>754 H, p>732 (dlaim) H, u<754 H, ps 754 (claim) O D. Ho u<732 (claim) O E. Ho H#754(claim) OF. Ho: H=732 H, u#732 (claim) H, p2732 H, p= 754

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A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 754 hours. A random sample of 30 light bulbs has a mean life of 732 hours. Assume the population is normally distributed and the
population standard deviation is 62 hours. At a = 0.05, do you have enough evidence to reject the manufacturer's claim? Complete parts (a) through (e).
(a) Identify the null hypothesis and alternative hypothesis.
O A. Ho Hs732
Ha: μ> 732 (claim)
O B. Ho: H2754 (claim)
O C. H, H>754
H ps754 (claim)
Ha <754
O D. Ho H<732 (claim)
Ha. μz732
O E. Ho H 754(claim)
H p=754
O F. Ho H=732
H, p#732 (claim)
Transcribed Image Text:A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 754 hours. A random sample of 30 light bulbs has a mean life of 732 hours. Assume the population is normally distributed and the population standard deviation is 62 hours. At a = 0.05, do you have enough evidence to reject the manufacturer's claim? Complete parts (a) through (e). (a) Identify the null hypothesis and alternative hypothesis. O A. Ho Hs732 Ha: μ> 732 (claim) O B. Ho: H2754 (claim) O C. H, H>754 H ps754 (claim) Ha <754 O D. Ho H<732 (claim) Ha. μz732 O E. Ho H 754(claim) H p=754 O F. Ho H=732 H, p#732 (claim)
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