A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 763 hours. A random sample of 22 light bulbs has a mean life of 736 hours. Assume the population is normally distributed and the population standard deviation is 59 hours. At =D0.05, do you have enough evidence to reject the manufacturer's claim? Cormplete parts (a) through (e). (a) Identify the ull hypothesis and alternative hypothesis. O A. Ho: u> 763 O B. H: =736 O C. Ho: us736 Ha: us 763 (claim) Ha Hz736 (claim) Ha:> 736 (claim) O D. Ho: H#763(claim) O E. Ho: u<736 (claim) F. Ho u2763 (claim) Ha: H= 763 Hai H2736 HaiH<763 (b) Identify the critical value(s). Use technology. Z0 = (Use a comma to separate answers as needed. Round to two decimal places as needed.)
A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 763 hours. A random sample of 22 light bulbs has a mean life of 736 hours. Assume the population is normally distributed and the population standard deviation is 59 hours. At =D0.05, do you have enough evidence to reject the manufacturer's claim? Cormplete parts (a) through (e). (a) Identify the ull hypothesis and alternative hypothesis. O A. Ho: u> 763 O B. H: =736 O C. Ho: us736 Ha: us 763 (claim) Ha Hz736 (claim) Ha:> 736 (claim) O D. Ho: H#763(claim) O E. Ho: u<736 (claim) F. Ho u2763 (claim) Ha: H= 763 Hai H2736 HaiH<763 (b) Identify the critical value(s). Use technology. Z0 = (Use a comma to separate answers as needed. Round to two decimal places as needed.)
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.2: Expected Value And Variance Of Continuous Random Variables
Problem 10E
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Transcribed Image Text:A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 763 hours. A random sample of 22 light bulbs has a mean life of 736 hours. Assume the population is normally distributed and the
population standard deviation is 59 hours. At =D0.05, do you have enough evidence to reject the manufacturer's claim? Cormplete parts (a) through (e).
(a) Identify the ull hypothesis and alternative hypothesis.
O A. Ho: u> 763
O B. H: =736
O C. Ho: us736
Ha: us 763 (claim)
Ha Hz736 (claim)
Ha:> 736 (claim)
O D. Ho: H#763(claim)
O E. Ho: u<736 (claim)
F. Ho u2763 (claim)
Ha: H= 763
Hai H2736
HaiH<763
(b) Identify the critical value(s). Use technology.
Z0 =
(Use a comma to separate answers as needed. Round to two decimal places as needed.)
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