A sample of computer tablet batteries has a mean battery life of 28 months and standard deviation of 4 months. What is the lifes pan of batteries that are within the given standard deviation of the mean?
1 answer:
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
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I think the answer is 6.6
Answer:
mean: 8.9, median: 9, mode: 3, range: 14, standard deviation: 5.1
Step-by-step explanation:
The mean is all the numbers added up, divided by how many numbers there are. To get the median you arrange the numbers biggest to smallest and find the middle number.
Write an out an equation using the information given. So:
