Who has won more tennis grand slam titles, venus williams or serena williams?

One way in which the european union encourages trade among countries is through the use of

What film is responsible for the creation of the pg-13 rating?

Which is relatively better: a score of 76 on a psychology test or a score of 22 on an economics test? scores on the psychology test have a mean of 90 and a standard deviation of 13. scores on the economics test have a mean of 52 and a standard deviation of 10.