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A manufacturer of automobile batteries claims that the average life of its best battery is 54 months with a standard deviation of 6 months. You
A manufacturer of automobile batteries claims that the average life of its best battery is 54 months with a standard deviation of 6 months. You may assume a Normal distribution
- Find the probability that one battery will last less than 52 months.
- Consider a random sample of 50 batteries. Find the probability that the sample average battery life will be less than 52 months.
- Why are the probabilities computed in a) and b) different?
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Algebra And Trigonometry Enhanced With Graphing Utilities (Subscription)
Authors: Michael Sullivan, Michael Sullivan III
7th Edition
0134273842, 9780134273846
