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.

-You ask 27 people what kind of pet they own.Seven people have dogs,five have cats,three have birds,and the remainder have no pets.The relative frequency of dog owners,rounded to three 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.
 
-You ask 27 people what kind of pet they own.Seven people have dogs,five have cats,three have birds,and the remainder have no pets.The relative frequency of dog owners,rounded to three 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.
 
-You ask 27 people what kind of pet they own.Seven people have dogs,five have cats,three have birds,and the remainder have no pets.The relative frequency of dog owners,rounded to three decimal places,is:

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