The specification for a plastic handle calls for a length of 6.0 inches 0.3 inches (5.7 to 6.3 inches). The process is known to operate at a mean thickness of 5.9 inches. The minimum acceptable process capability is 4-sigma (1.33). The standard deviation () of the process is currently 0.06 inches.

d) Suppose that the mean of the process is still operating at a mean of 5.95 inches but the standard deviation is worsened and is now 0.1 inches and the process follows a normal probability distribution. The lower spec (specification) limit is still 5.70 and the upper spec limit is still 6.30. What percent of the values are below the lower spec limit?