Wood shipping boxes are often recommended over cardboard shipping boxes because its strength tends to be higher, therefore, making it more durable and long-lasting. Based on data collected, Fedex determines that the breaking strength of most wooden shipping boxes are normally distributed with a mean of 500 pounds per square inch and a standard deviation of 20 pounds per square inch.
Based on the 68-95-99.7 Rule, about what percent of its wooden shipping boxes will have breaking strengths greater than 520 pounds per square inch
A. Approximately 16%
B. Approximately 1.3%
C. Approximately 20%
D. Approximately 32%