4. Felician University uses hundreds of fluorescent light bulbs each year. The brand of bulb it currently uses has a mean life of 900 hours. A manufacturer claims that its new brand of bulbs, which cost the same as the brand the university currently uses, has a mean life of more than 900 hours. Suppose sixty-one bulbs were tested and showed a mean life of 930 hours with population standard deviation of 80 hours. The university has decided to purchase the new brand if, when tested, the test evidence supports the manufacturer's claim at a=.05. Should Felician University purchase the new brand? Use the traditional and p-value approaches. I
4. Felician University uses hundreds of fluorescent light bulbs each year. The brand of bulb it currently uses has a mean life of 900 hours. A manufacturer claims that its new brand of bulbs, which cost the same as the brand the university currently uses, has a mean life of more than 900 hours. Suppose sixty-one bulbs were tested and showed a mean life of 930 hours with population standard deviation of 80 hours. The university has decided to purchase the new brand if, when tested, the test evidence supports the manufacturer's claim at a=.05. Should Felician University purchase the new brand? Use the traditional and p-value approaches. I
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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4. Felician University uses hundreds of fluorescent light bulbs each year. The brand of bulb
it currently uses has a mean life of 900 hours. A manufacturer claims that its new brand
of bulbs, which cost the same as the brand the university currently uses, has a mean life
of more than 900 hours. Suppose sixty-one bulbs were tested and showed a mean life of
930 hours with population standard deviation of 80 hours. The university has decided to
purchase the new brand if, when tested, the test evidence supports the manufacturer's
claim at a=.05. Should Felician University purchase the new brand?
Use the traditional and p-value approaches.
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