(Answered) Wood shipping boxes are often recommended over cardboard

Statistics

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%

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