=+7.40 ● The following data are a sample of survival times

(in days from diagnosis) for patients suffering from chronic leukemia of a certain type (Statistical Methodology for Survival Time Studies, Bethesda, MD: National Cancer Institute, 1986):

7 47 58 74 177 232 273 285 317 429 440 445 455 468 495 497 532 571 579 581 650 702 715 779 881 900 930 968 1077 1109 1314 1334 1367 1534 1712 1784 1877 1886 2045 2056 2260 2429 2509 2045 2056