13. Up to three standard deviations above or below the center lime is the amount of variation that statistical process control allove for a Type I errors b. about 95.5% variation c. natural variation d all types of variation assignable variation 14. Jars of picides are sampled and weighed Sample measures are plotted on control charts. The ideal weight should be precisely 11 oz Which type of chart(s) would you recommend? p-chart c-charts - and R-charts but not R-charts e. both p- and c-charts 15. The local newspaper receives several complaints per day about typographic errors. Over a seven-day period, the publisher has received calls from readers reporting the following number of errors: 4,3,2, 6,7. 3, and 9. Based on these data alone, what type of control chart() should the publisher use? a p-chart b. c-chart c. 7-chart d. R-chart e. - and R-charts