A company is supplying water supply hoses to a manufacturer of kitchen appliances who has specified that the outside diameter should be 0.400 ± 0.030 inch. One hundred samples of n = 4 hoses show that...

Extracted text: A company is supplying water supply hoses to a manufacturer of kitchen appliances who has specified that the outside diameter should be 0.400 ± 0.030 inch. One hundred samples of n = 4 hoses show that the process is in good statistical control, the diameters are normally distributed, and that the estimates for process mean (û) and standard deviation ( ô ) are 0.410 and 0.020 inch, respectively. Compute the percent of the water supply hoses that are within the specifications. Answer: (The error tolerance is ±0.02)