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When a man observed a sobriety checkpoint conducted by a police? department, he saw 650 650 drivers were screened and 4   4 were arrested for driving while intoxicated

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When a man observed a sobriety checkpoint conducted by a police? department, he saw 650

650 drivers were screened and 4

 

4 were arrested for driving while intoxicated. Based on those? results, we can estimate that Upper P left parenthesis Upper W right parenthesis

 

P(W)equals

 

=0.00615

 

0.00615?, where W denotes the event of screening a driver and getting someone who is intoxicated. What does Upper P left parenthesis Upper W overbar right parenthesis

 

PW ?denote, and what is its? value?