A biomedical engineer is trying to develop genetic methods for extending the lifetimes of cells. In a control population of cells, he measures the following lifetimes.
Lifetime (hrs) Number of Cells
300-399 14
400-499 46
500-599 58
600-699 76
700-799 68
800-899 62
900-999 48
1000-1099 22
1100-1199 6
a) Plot a binned histogram for the data.
b) Plot a relative frequency distribution (also called the normalized histogram) and the cumulative distribution of relative frequency for the data.
c) Estimate the percentage of cells with lifetimes of
i) less than 600 hours
ii) 900 or more hours and
iii) at least 500 but less than 1000 hours