question_answer

The times (in seconds) taken by 72 atheletes to run a 200 m hurdle race are tabulated below:

Class	15.2\[-\]15.4	15.4\[-\]15.6	15.6\[-\]15.8	15.8\[-\]16.0
Frequency	13	19	23	17

If an athelete is chosen at random, then find the probability that he is the one who has completed the race in less than 15.8 seconds.

A) \[\frac{55}{72}\]                                                           

B)  \[\frac{23}{72}\]          

C)   \[\frac{1}{4}\]                                                            

D)  \[\frac{17}{72}\]

E)  None of these