- The Charge Life Of A Certain Lithium Ion Battery For Camcorders Is Normally Distributed With Mean 75 Minutes And Standa 1 (10.57 KiB) Viewed 75 times
- The Charge Life Of A Certain Lithium Ion Battery For Camcorders Is Normally Distributed With Mean 75 Minutes And Standa 2 (56.88 KiB) Viewed 75 times
(a) What is the probability that a randomly selected battery of this type lasts more than 100 minutes on a single charge? Is this result unusual? (b) Describe the sampling distribution of x, the sample mean charge life for a random sample of 10 such batteries. (c) What is the probability that a random sample of 10 such batteries has a mean charge life of more than 100 minutes? Is this result unusual? (d) What is the probability that a random sample of 25 such batteries has a mean charge life of more than 100 minutes? (e) Explain what causes the probabilities in parts (c) and (d) to be different.