The four questions in this quiz are based on the Flyrock setting.

The extrusion process for the AX-527 tires produces sheets of rubber at a rate equivalent to 10,000 tires per hour. The thickness specifications is 400 10 thou (1 thou = 0.001 inch). Susan and her staff analyzed many samples of output from the extruder and determined that if the extruder settings were accurate, the output produced by the extruder had a thickness that was normally distributed with a mean of 400 and a standard deviation () of 4.

Question 1: If the settings are accurate, what proportion of the rubber extruded will be within specifications?

Round your final answer to 4 decimals. Do not report your answer in percentage form.

and

Determine the C_p for this process.

Round your final answer to 4 decimals.

Your Answer