(Solved): Certain pipes are specified to have a roughness coefficient of between \( 0.2 \) and \( 0.3 \). Th ...

Certain pipes are specified to have a roughness coefficient of between \( 0.2 \) and \( 0.3 \). The manufacturing process is known to produce pipes with normally distributed roughnesses with mean \( 0.25 \) and standard deviation of \( 0.03 \). What percentage of pipes is expected to meet the specification? Hint: stats. norm.