Apply the 68-95-99.7 rule to answer the question.
-The annual precipitation for one city is normally distributed with a mean of 266 inches and a standard deviationof 2.5 inches. What percentage of years had precipitation between 261 inches and 271 inches?

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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, 95% falls within two standard deviations, and 99.7% falls within three standard deviations. The range from 261 inches to 271 inches encompasses a span of two standard deviations (2.5 inches x 2 = 5 inches) from the mean (266 inches), so approximately 95% of the years had precipitation within this range.

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