$\backslash$table$[[,$Speeding violation,$\backslash$table$[[$No speeding$],[$violation$]],$Total$],[$Cell phone user,$10,490,500],[\backslash$table$[[$Not a cell phone$],[$user$]],20,480,500],[$Total$,30,970,1000]]$

Consider the table above. What is the probability that a randomly selected person is a cell phone user?

$\frac{10}{1000}$

$500/1000$

$\frac{30}{1000}$

$50/1000$