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

16% is the percent of wooden shipping boxes will have breaking strengths greater than 520 pounds per square inch.

Step-by-step explanation:

We are given the following information:

Mean = 500 pounds

Standard Deviation = 20 pounds

Empirical rule:

We have to find the percent of its wooden shipping boxes that will have breaking strengths greater than 520 pounds per square inch.

Now,

According to empirical rule around 68% of the data will lie between

Thus, 34% of data lies between 500 and 520.

Data lying above 520 = 50% - 34% = 16%

16% is the percent of wooden shipping boxes will have breaking strengths greater than 520 pounds per square inch.

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this is answer of 144 cubic meters