Below are the lifetimes, in hours, of fifty 40-watt, 110-vult internally frosted incandescent lamps, taken from forced life tests: 919, 1196, 785, 1126, 936, 918, 1156, 920, 948, 1067, 1092, 1162, 1170, 929, 950, 905, 972, 1035, 1045, 855, 1195, 1195, 1340, 1122, 938, 970, 1237, 956, 1102, 1157, 978, 832, 1009, 1157, 1151, 1009, 765, 958, 902, 1022, 1333, 811, 1217, 1085, 896, 958, 1311, 1037, 702, 923.  Cunstruct a Frequency Distribution Table with suitable class Intervals.  Cunstruct a relative frequency histogram  draw a  Frequency Polygon.

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