Use the following to answer questions :
The following table gives the cumulative frequency distribution of the commuting time (in minutes)from home to work for a sample of 400 persons selected from a city.

-The cumulative relative frequency of the fourth class,rounded to four decimal places,is:

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Use the following to answer questions :
The following table gives the cumulative frequency distribution of the commuting time (in minutes)from home to work for a sample of 400 persons selected from a city.
 
-The cumulative relative frequency of the fourth class,rounded to four decimal places,is:

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The Answer of Use the following to answer questions :
The following table gives the cumulative frequency distribution of the commuting time (in minutes)from home to work for a sample of 400 persons selected from a city.
 
-The cumulative relative frequency of the fourth class,rounded to four decimal places,is:

Use the Following to Answer Questions