In a study of a gender selection method used to increase the likelihood of a baby being born a girl, 2086 users of the method gave birth to 1019 boys and 1067 girls. there is about a 15% chance of getting that many girls if the method had no effect.
because there is a 15% chance of getting that many girls by chance, the method( )
a, has statistical significance
b, has parctical significance
c, does not have statistical significane
d, does not have parctical significance