Can someone please explain what the Empirical Rule is? How could I use it to solve future problems?


A large study of the heights of 590 adult men found that the mean height was 71 inches tall. The standard deviation was 4 inches. If the distribution of data was normal, about what percentage of men from the study were between 67 and 79 inches tall? Use the 68-95-99.7 rule (sometimes called the Empirical rule or the Standard Deviation rule). For example, enter 0.68, NOT 68 or 68%.

(Write your answer in decimal form, not percentage form. For example, if your percentage is 99%, enter 0.99, not 99. Round your answer to three decimal places.)