The average daily cost to community hospitals for patient stays during 1993 for each of the 50 U.S. states was as follows:

These data are also provided in the file XR02057. SOURCE: Health Insurance Association of America, Source Book of Health Insurance Data 1995, p. 103.
a. Construct a stem-and-leaf display for these data.
b. Construct a frequency distribution.
c. Determine the interval width and the class mark for each of the classes in your frequency distribution.
d. Based on the frequency distribution obtained in part (b), draw a histogram and a relative frequency polygon.

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$775 $775 GA AL $738 ME 823 1136 HI AK MD 889 ID 659 AZ 1091 1036 MA 678 917 IL AR 902 MI 898 1221 IN CA 652 MN CO IA 612 961 555 MS KS 666 CT 1058 863 MO KY 703 DE 1029 482 MT 875 LA FL 960 NE 626 NV $900 OK $797 UT $1081 NH 976 OR 1052 VT 676 NJ 829 PA 861 VA 830 NM 1046 RI 885 WA 1143 NY 784 SC 838 wv WI 701 NC 763 SD 506 744 ND 507 TN 859 WY 537 Он 940 TX 1010 55$§3