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Question
The time (in seconds) taken by 150 athelets to run a 110 m hurdle race are tabulated below.
Class13.8−1414−14.214.2−14.414.4−14.614.6−14.814.8−15Frequency245714820
The number of atheletes who completed the race in less than 14.6 s is
The time (in seconds) taken by 150 athelets to run a 110 m hurdle race are tabulated below.
Class13.8−1414−14.214.2−14.414.4−14.614.6−14.814.8−15Frequency245714820
The number of atheletes who completed the race in less than 14.6 s is
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Solution
The correct option is C 82
The number of athletes who completed the race in less than 14.6 is given by the cumulative frequency of the class 14.4 - 14.6
= 2 + 4 + 5 + 71
= 82
82
The number of athletes who completed the race in less than 14.6 is given by the cumulative frequency of the class 14.4 - 14.6
= 2 + 4 + 5 + 71
= 82
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