The procedure of a blood test has been followed in the laboratory of the emergency department. According to the collected data in the 1-month period observed, the average processing time is 26.2 minutes and the standard deviation is 1.35 minutes. The upper and lower limits are 20 and 30 minutes for shift and workload planning. The laboratory manager wants to achieve 50 performance of this process. Is the process sufficient with the current situation? Factor for Sample Size Coefficients for Limits center Coefficients for Limits line A A1 A2 d2 D1 D2 D3 D4 2 2,121 3,761 1,88 1,128 0 3,686 0 3,267 3 1,732 2,394 1,023 1,693 0 4,358 0 2,575 4 1,5 1,88 0,729 2,059 0 1,698 0 2,282 5 1,342 1,596 0,577 2,326 0 BT6't 0 6 1,225 1,41 0,483 2,534 5,078 0 2,004 7 1,134 1,277 0,419 2,704 0,205 5,203 0,076 1,924 8 1,061 1,175 0,373 2,847 0,387 5,307 ,136 1,864 9 L,094 0,337 2,97 0,546 5,394 0,184 1,816 10 0,949 1,028 0,308 3,078 0,687 5,469 0,223 1,777 11 0,905 0,973 0,285 3,173 0,812 5,534 0,256 1,744 12 0,866 0,925 0,266 3,258 0,924 5,592 ,284 1,716 13 0,832 0,884 0,249 3,336 L,026 5,646 ,308 1,692 14 0,80235 0,848 0,235 3,407 1,121 5,693 0,329 1,671 15 0,775 0,816 0,223 3,472 1,207 5,737 0,348 1,652