The frequency distribution shown in the figure lists the number of hours per day

Question

The frequency distribution shown in the figure lists the number of hours per day a randomly selected sample of teenagers spent watching tv. Determme what percent of the teenagers spent at least 2 hours but less than 4 hours watching tv.  

Hours per day   # of teenagers    

0 </ x < 1           18

1 </ x < 2          31

2 </ x < 3          24

3 </ x < 4             38

4 </ x < 5          27

5 </ x < 6      12

6 </ < 7        15

Round answer to the nearest tenth of a %.. </ is less than or equal to.

Explanation / Answer

Total teenagers =18 + 31 + 24 + 38 + 27 + 12 + 15 = 165

Number of the teenagers spent at least 2 hours but less than 4 hours watching tv = 24 + 38 = 62

Hence percent of the teenagers spent at least 2 hours but less than 4 hours watching tv = (62/135)*100

                                                                                                                              = 45.925

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