A sample of 64 of these smartphones is taken what is the


Question: The length of time a particular smartphone's battery lasts follows an exponential distribution with a mean of ten months. A sample of 64 of these smartphones is taken.

1. a. What is the standard deviation?

b. What is the parameter m?

2. What is the distribution for the mean length of time 64 batteries last?

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Basic Statistics: A sample of 64 of these smartphones is taken what is the
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