The energy storage system is an important part of any electric car. An electric car company has decided to replace their batteries with a new type and want to examine two types of batteries for its new vehicles: Lithium-ion and Lead-acid batteries. Due to the critical role of lifespan in the energy storage system, the company randomly selected 10 samples from each type and ran an accelerated life test to obtain the lifetime of each battery type. The measured lifespan is illustrated in the table below: Lithium-ion Lead-acid 365 370 366 358 369 362 364 357 364 363 365 355 364 366 365 359 369 355 362 356 (a) Test the hypothesis that the mean lifespan of the two battery types are equal. Use a = 0.01 and assume equal variances. (b) Find the P-value for this test
The energy storage system is an important part of any electric car. An electric car company has decided to replace their batteries with a new type and want to examine two types of batteries for its new vehicles: Lithium-ion and Lead-acid batteries. Due to the critical role of lifespan in the energy storage system, the company randomly selected 10 samples from each type and ran an accelerated life test to obtain the lifetime of each battery type. The measured lifespan is illustrated in the table below: Lithium-ion Lead-acid 365 370 366 358 369 362 364 357 364 363 365 355 364 366 365 359 369 355 362 356 (a) Test the hypothesis that the mean lifespan of the two battery types are equal. Use a = 0.01 and assume equal variances. (b) Find the P-value for this test
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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