The alkaline batteries of a toy car were designed to last 30 hours, on average. However lots of customers complained that the batteries were lasting less than 30 hours. You decided to randomly sample 38 of the batteries. The mean of the sample was 29.3 hours and the standard deviation 2.8 hours. Is there sufficient evidence not support the claim that the mean battery life is less than 30 hours? Perform a hypothesis test at the 5% significance level using the p-value approach. a) State Null and alternative hypothesis b) Find test Statistics c)Find p-value d) Conclusion

The alkaline batteries of a toy car were designed to last 30 hours, on average. However lots of customers complained that the batteries were lasting less than 30 hours. You decided to randomly sample 38 of the batteries. The mean of the sample was 29.3 hours and the standard deviation 2.8 hours. Is there sufficient evidence not support the claim that the mean battery life is less than 30 hours? Perform a hypothesis test at the 5% significance level using the p-value approach. a) State Null and alternative hypothesis b) Find test Statistics c)Find p-value d) Conclusion

College Algebra (MindTap Course List)

12th Edition

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter8: Sequences, Series, And Probability

Section8.7: Probability

Problem 58E: What is meant by the sample space of an experiment?

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