A sample of computer tablet batteries has a mean battery life of 28 months and standard deviation of 4 months. What is the lifes

Question

1 year ago

5

pan of batteries that are within the given standard deviation of the mean?
1. 1 Standard deviation

2. 2 Standard deviation

3. 3 Standard deviation

1 answer:

Ulleksa [173] · Answer 1 · 2023-03-01T12:16:20+03:00

Using the Empirical Rule, it is found that the lifespans, in months, are given by:

1. 24 and 32.

2. 20 and 36.

3. 16 and 40.

<h3>What is the Empirical Rule?</h3>

It states that, for a normally distributed random variable:

Approximately 68% of the measures are within 1 standard deviation of the mean.

Approximately 95% of the measures are within 2 standard deviations of the mean.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

Hence, considering the mean of 28 months and the standard deviation of 4 months, the life spans are given by:

1. 24 and 32.

2. 20 and 36.

3. 16 and 40.

More can be learned about the Empirical Rule at brainly.com/question/24537145