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Lisa
New Member

USA
1 Posts

 Posted - 10/08/2007 :  15:19:55 Please help me with this textbook problem. I'm practicing problems for an upcoming test and this one has stumped me me. Thanks.New Jersey Turnpike has a posted speed limit of 60 mph. A survey of drivers on this turnpike revealed the following facts:1. 14% of the drivers on this highway were African Americans.2. 98% of the drivers were exceeding speed limit 3. Of these violators, 15% of the drivers were African American.4. Of the drivers stopped for speeding by the New Jeresy police, 35% were African Americans.Answer the following questions:(a). Find the probability that a driver is African American and exceeding the speed limit.(b.) Given a driver is exceeding the speed limit, what is the probability that the driver isn't African American.(c.) Given that a driver is stopped by the New Jersey police for speeding, what is the probability that the driver isn't African American.

Subhotosh Khan

USA
9117 Posts

 Posted - 10/09/2007 :  15:17:31 quote:Originally posted by LisaPlease help me with this textbook problem. I'm practicing problems for an upcoming test and this one has stumped me me. Thanks.New Jersey Turnpike has a posted speed limit of 60 mph. A survey of drivers on this turnpike revealed the following facts:1. 14% of the drivers on this highway were African Americans.2. 98% of the drivers were exceeding speed limit 3. Of these violators, 15% of the drivers were African American.4. Of the drivers stopped for speeding by the New Jeresy police, 35% were African Americans.Answer the following questions:(a). Find the probability that a driver is African American and exceeding the speed limit.(b.) Given a driver is exceeding the speed limit, what is the probability that the driver isn't African American.(c.) Given that a driver is stopped by the New Jersey police for speeding, what is the probability that the driver isn't African American.These are straight-forward problems.Show us your work - and tell us exactly where you are stuck - so that we would know where to begin to help you.
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