Based on Data Collected from Its Production Processes, Crosstiles Inc

Multiple Choice

Based on data collected from its production processes, Crosstiles Inc.determines that the breaking strength of its most popular porcelain tile is normally distributed with a mean of
400 pounds per square inch and a standard deviation of 12.5 pounds per square inch.Based
On the 68-95-99.7 Rule, about what percent of its popular porcelain tile will have breaking
Strengths between 375 and 425 pounds per square inch?

A) 95%
B) 68%
C) 84%
D) 32%
E) 47.5%