Apply the 68-95-99.7 rule to answer the question.
-The lifetimes of light bulbs of a particular type are normally distributed with a mean of 350 hours and a
Standard deviation of 6 hours. What percentage of the bulbs have lifetimes that lie within 1 standard deviation
To either side of the mean?

Question

Quizplus · Accepted Answer

The 68-95-99.7 rule, also known as the empirical rule, states that for a normal distribution, approximately 68% of the data falls within one standard deviation of the mean.

Apply the 68-95-99.7 Rule to Answer the Question