Answer to Question #74982 in Statistics and Probability for pranjal shukla

Question

For the following frequency table obtain the relative frequencies and the cumulative frequencies of the 'more than' type.

Distribution of250 lamp bulbs by life (in hours)

Li& {fn hours)

499.5 - 649.5 Freguenc�

5
649.5 - 799.5 20
799.5 - 949.5 40
949.5 - 1099.5 81
1099.5 - 1249.5 57
1249.5 - 1399.5 34
1399.5 - 1549.5 13
Total 250

Also determine the number of bulbs having a life of 1249.5 hours or less.