Answer:
95%.
Step-by-step explanation:
We have been given that the lifetimes of light bulbs of a particular type are normally distributed with a mean of 370 hours and a standard deviation of 7 hours.
We are asked to find the percentage of the bulbs whose lifetimes lie within 2 standard deviations to either side of the mean using empirical rule.
The empirical rule (68-95-99.7) states that approximately 68% of data points lie within 1 standard deviation of mean and 95% of data points lie within two standard deviation of mean. 99.7% of data points lie within three standard deviation of mean.
Therefore, approximately 95% of data points lie within two standard deviation of mean.
There would be 87.24 cm in 872.4 mm
Answer:
5x^2-x
Step-by-step explanation:
pls mark as brainliest
Answer:
2 1/2
Step-by-step explanation:
To find the distance, take the absolute value of
|0- 2 1/2|
|-2 1/2|
2 1/2
#6. C
#7. B
#8. B
(I know the questions dont have indicating letters but I used letters to shorten my answer, I'm sure you can understand it)
