Question

4. (Problem 3.9 from Text) A fastener company is supplying washers to a manufacturer of kitchen appliances who has specified that the outside diameter be 0.500 + 0.025 inch. Fifty samples ofn = 5 washers show that the process is in good statistical control, the diameters are normally distributed, and that and ơx for the process are 0.505 and 0.0065 inch, respectively a.) What percent of the washers made by this process are within the specifications? Sketch the appropriate graphs to represent the distribution of the process along with the specifications b)what would happen if the process variability was reduced by about half (ie., ơ, changed to 0.003 inch)?

Answer 1

二0.475-ne. 0, 525 aiuM Protel (o. 525-0.505 6. 0065 223.68

CL user u-ppel 6. 5c0 d51S he he o.oo