computer company claims that the lifespan of ts batteries is mpre than 3.7 years. The population standard deviation is 0.7 years. A sample of 35 batteries was tested, and their mean lifespan was 4.3 years. Using a 90% confidence level, determine if the company's claim is correct.

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computer company claims that the lifespan of
its batteries is mpre than 3.7 years. The
population standard deviation is 0.7 years. A
sample of 35 batteries was tested, and their
mean lifespan was 4.3 years. Using a 90%
confidence level, determine if the company's
claim is correct.
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Transcribed Image Text:computer company claims that the lifespan of its batteries is mpre than 3.7 years. The population standard deviation is 0.7 years. A sample of 35 batteries was tested, and their mean lifespan was 4.3 years. Using a 90% confidence level, determine if the company's claim is correct. Show word count ( Previous Next
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