Question
A tire manufacturer wishes to set a minimum mileage guarantee on a new set of tires. The mean is 67,900 with a standard deviation of 2,050. The manufacturer wants to set a minimum guaranteed mileage so that no more than 4% of the tires will have to be replaced. What should the minimum mileage be?
Answers
bobpursley
71490 miles nearly.
http://davidmlane.com/hyperstat/z_table.html
Use the second applet, put in mean, std deviation, set above to .04
http://davidmlane.com/hyperstat/z_table.html
Use the second applet, put in mean, std deviation, set above to .04
Related Questions
Wrong tire pressure can increase tire wear and decrease gas mileage. A manufacturer of new tires tes...
The manufacturer of the X-15 steel-belted radial truch tire claims that the mean mileage the tire ca...
Suppose a tire manufacturer wants to set a mileage guarantee on its new XB 70 tire. Life tests reve...
the lytton rubber company wishes set a minimum mileage guarantee on its new Mx 100 tire. Tests revea...